More musical chairs at Yahoo, which BoomTown predicted recently, as top execs at the company move in and out of jobs, and new ones from the outside move in.

Perhaps the most important change to occur is the replacement this week of SVP Scott Dietzen–who has been in charge of all communications and communities products at Yahoo (YHOO)–by former Adobe Systems (ADBE) exec Bryan Lamkin, several sources said.

Lamkin will become SVP of Applications Products.

According to his profile on LinkedIn, Lamkin (pictured here) was most recently SVP of Creative Solutions, Adobe’s largest business unit, where the software exec “led product strategy, marketing and product development for Adobe’s flagship software applications, including Photoshop, the Creative Suite, Dreamweaver, Flash and Illustrator.”

Lamkin, who was at Adobe for 14 years, has more recently been an executive-in-residence at two venture firms, New Enterprise Associates and Sutter Hill Ventures.

He will take over for Dietzen, who came to Yahoo in 2007 after its $350 million Zimbra open-source email acquisition

Dietzen–whom sources said is more entrepreneurial than managerial and did not want to lead such a big organization at the Internet giant–will become VP of strategy in the move. Many said they expect he will eventually leave Yahoo to try his hand at another start-up.

His colleague, Zimbra founder and CEO Satish Dharmaraj, left Yahoo earlier this year to join Redpoint Ventures as a VC.

In his job since, Dietzen has been busy fixing Yahoo’s mail and calendar offerings. (See my video interview with him below from last fall.)

But that’s not all.

Also afoot is a restructuring of Yahoo’s North American sales unit, with the unexpected promotion of Mitch Spolan, who was a regional sales exec and will now be in charge of all North American field sales.

The paidContent Web site reported the sales changes first, which have been rumored around Yahoo recently.

Spolan jumped over two more senior execs, sources said, who run sales operations for the East and West coasts. One of those execs, Beth Lawrence, will now run Yahoo’s relations with agencies. Both report to U.S. sales SVP Joanne Bradford.

Over the last 18 months, Yahoo has seen a bleeding of its advertising staff to a wide range of Silicon Valley Web companies, including, most recently, Yahoo’s VP of Sales Operations Dan Foehner to social-networking site Facebook.

Lastly, one of Yahoo’s most senior communications execs, Brad Williams, was let go as part of its recent round of layoffs. He had been running PR–admirably and with good cheer, I might add, despite all the bad news–since its head, Jill Nash, departed earlier this year.

Williams’s departure was first reported by The Wall Street Journal tonight. He came to Yahoo in early 2008 from eBay (EBAY).

New marketing head Elisa Steele, who was hired by CEO Carol Bartz, had recently hired a headhunting firm to find a new PR chief, sources said, and Williams was not considered as a candidate for the job.

UPDATE: Yahoo confirmed my report above.

A spokesman sent me the following info about Lamkin’s appointment:

Bryan Lamkin, formerly of Adobe, is joining Yahoo! as senior vice president of Applications Products, reporting directly to Ari Balogh. As a reminder, the Applications Products group consists of several key global products for Yahoo!, including Yahoo! Mail, Yahoo! Messenger, Flickr, Yahoo! Answers, Yahoo! Groups and Zimbra.

Bryan brings a wealth of experience on the consumer technology front and his background ties in nicely with Yahoo!’s ongoing focus to deliver great consumer experiences across the globe.

Bryan takes over for Scott Dietzen, who was named the interim head of Application Products following the reorg back in February. Scott will continue on at Yahoo!, and will work across Yahoo!’s Applications Products in a new product strategy role.

Bio

Bryan Lamkin

Senior Vice President, Applications Product, Yahoo!

Bryan Lamkin joins Yahoo! as the senior vice president of Applications Products. In this role, he will oversee the global strategy, development and performance for key products within the Yahoo! portfolio, including Yahoo! Mail, Yahoo! Messenger, Flickr, Yahoo! Answers, Yahoo! Groups and Zimbra.

Lamkin most recently served as senior vice president and general manager of Creative Solutions, Adobe’s largest business unit. Lamkin led product strategy, marketing and research and development for Adobe’s flagship software applications, including the Photoshop, Photoshop Elements, the Creative Suite, Dreamweaver, Flash and Illustrator.

In his 14 years at Adobe Systems, Lamkin held key management positions including Senior Vice President and General Manager, Digital Imaging and Video and Vice President of Marketing, Professional Publishing Solutions. Lamkin was responsible for product development and marketing as well as the acquisition and product integration strategies that established Adobe’s overwhelming leadership in digital imaging and video and web publishing. Before joining Adobe Systems, Lamkin served in key product marketing and international product development roles at Software Publishing Corporation and holds both a BA and MBA from the University of California at Berkeley.

And here is Dietzen in my video interview:

Former top Yahoo advertising exec David Karnstedt (pictured here), who has been parked at a Silicon Valley venture firm since he left the company, has been named president and CEO of Efficient Frontier.

Interestingly, another former Yahoo (YHOO) exec, Ellen Siminoff, has also been CEO at the Sunnyvale, Calif.-based search engine marketing firm. She is now chairman.

Karnstedt, who was SVP of of Yahoo’s North American sales until last fall, replaces James Beriker.

He has most recently been an executive-in-residence at Redpoint Ventures, an investor in Efficient Frontier.

Here is an interview I did with Karnstedt in 2007, when he was at Yahoo.

And here is the full press release:

Efficient Frontier Names David Karnstedt as President and CEO

Former Redpoint Ventures Executive-in-Residence and Senior Vice President of Yahoo!’s North American Sales Brings Extensive Experience to the Post

Sunnyvale, Calif. – April 2, 2009 – Efficient Frontier, the worldwide leader in Search Engine Marketing (SEM) technology and services, today announced that David Karnstedt has been named President and Chief Executive Officer of the company.

Karnstedt most recently was an Executive-in-Residence at Redpoint Ventures, an investor in Efficient Frontier. Prior to Redpoint, he served as Senior Vice President of Yahoo!’s North American Sales with responsibility for more than $3 billion in revenue. During his tenure at Yahoo!, he successfully led the integration of the Search and Display sales teams into one central unit and helped establish Yahoo! as a recognized leader in both display and search marketing.

“We feel incredibly fortunate to have someone of David’s caliber join Efficient Frontier at this point in the company’s life cycle,” said Ellen Siminoff, Chairwoman of Efficient Frontier’s Board of Directors. “David’s extensive experience in the Internet space – specifically search – will be a huge asset as he leads the company forward.”

Karnstedt’s experience includes several industry firsts. Prior to Yahoo!, David led the Direct Sales team at Overture Services, the company that pioneered the paid search industry and was acquired by Yahoo! in 2003. He also served as Vice President and General Manager of Alta Vista, where he was responsible for the consumer business and helped shape product development and marketing strategies that leveraged the auctions-based search approach. Prior to Alta Vista, David served as Western Advertising Director at Wired Digital where he helped to develop some of the first advertising models on the Web. He is also active in the industry, having served on both the Advertising Council and Interactive Advertising Association’s Boards of Directors.

“As the leading global Search Engine Marketing company, Efficient Frontier has built tremendous assets –
including its technology platform, a global presence and a great team,” said David Karnstedt. “I plan to build on these key assets by expanding the company’s leadership in search, diversifying into complimentary product offerings and increasing its global presence. I am pleased to lead the company into its next phase of growth.”

Karnstedt is replacing James Beriker, who held executive positions at the company since April 2007 and was its President, CEO and a member of the Board of Directors from February 2008 until March 2009. The company’s business expanded significantly while James was CEO. We are appreciative of his efforts and contributions.

Another former Yahoo exec has landed at a Silicon Valley venture firm. This time, well-regarded serial entrepreneur Satish Dharmaraj will become a partner at Redpoint Ventures, according to sources.

The move of Dharmaraj is interesting, given that he is not starting a new company or taking a post as an entrepreneur-in-residence at the venture capital firm, as many operating execs do after leaving a company.

Dharmaraj left Yahoo (YHOO) in late January, as was reported here.

He worked there after one of the companies he founded, open-source email start-up Zimbra, was bought by the Internet giant for $350 million in late 2007.

Zimbra’s technology has been an important part of the effort to turbocharge Yahoo’s powerful communications properties as competitors like Google (GOOG) have become more aggressive.

Sources close to the situation said Dharmaraj would focus on business software, the enterprise arena and infrastructure at Redpoint.

Other former Yahoo execs who have gone to VC firms over the last year in a variety of roles include David Goldberg, Jeff Weiner (who has since become president of LinkedIn) and Andrew Braccia.

Here is a video interview I did with Dhamaraj last year after Yahoo bought Zimbra:

Last night, I was the master of ceremonies, as I have been for several years, at the laudable annual Astia Awards Dinner, which celebrated venture capital firms that support women-led companies.

And VC Tim Draper really went above and beyond in showing–quite literally–his support for his female entrepreneurs.

The San Francisco-based nonprofit does work to accelerate funding and growth of early-stage women-led businesses in life sciences, high technology and clean technology, with chapters in Silicon Valley, London and New York.

The NVCA member firms honored at the show, which is sponsored by Deloitte and Fenwick & West, by Astia for making the most investments in companies with a woman CEO were Draper Fisher Jurvetson, InterWest Partners, Prolog Ventures and Redpoint Ventures.

In addition, Allan Will, founding managing director of Split Rock Partners, received the Deloitte Leadership in Mentoring Award for encouraging female CEOs in technology-based fields.

Other award winners this year included: Anu Acharya, founder and CEO of Ocimum Biosolutions, who got the Life Science Innovator Award; Diane Greene, founder of VMware, who was awarded the Technology Innovator Award; and Pam Marrone, founder and CEO of Marrone Organic Innovations, who received the Clean Tech Innovator Award.

But it was Draper who stole the show, held at the de Young Museum in San Francisco’s Golden Gate Park.

He could not attend, but made his presence known by doing a video in which Draper sings very badly, but with incredible enthusiasm.

But before he starts crooning, Draper takes off an article of clothing for every woman-led company he funded.

Let’s just say, while he should be proud of his investments in women CEOs, it would have gotten very dicey if DFJ had done just one more.

But see for yourself–or, more correctly, see a lot of Tim Draper, in this video:

Last Friday, BoomTown paid a visit to James Joaquin, who has just been officially appointed the new CEO of Foxmarks, the Mitch Kapor-backed start-up that makes a free bookmarking and password syncing add-on for the Firefox browser.

The San Francisco-based company had also has gotten $5 million in funding from Redpoint Ventures earlier this summer. Initially, Foxmarks had been founded and seed-funded by Kapor, the well-known tech entrepreneur, and also got an additional investment from First Round Capital.

With the arrival of Joaquin, Foxmarks is trying to move into a mode of carving out a business with its assets, including using its data and expanding beyond the Firefox browser.

Here is the video interview with Joaquin about all that and more:

While the pair (pictured here, Schneider on the left and Bradford on the right) would not give specifics about how Bradford was hired, they both noted that they had gotten to know each other over the past year.

And Bradford added that she had met Yahoo (YHOO) President Sue Decker at a poker table several years ago while attending a women’s executive conference run by Fortune magazine.

“I won,” said Bradford proudly. “I beat her and everyone else [at the table].”

How much does BoomTown like a person who insults her uber-boss’s card-playing skills before she even starts?

Very much!

Actually, sharp gambling skills and a little in-your-face style are probably just what Yahoo needs, as the U.S. economy continues to tank and the company tries to recover from the Microsoft (MSFT) takeover debacle.

Combined with management drift and employee turmoil over the last year, Yahoo’s ad business has suffered accordingly.

“I had a laser-like focus on bringing in Joanne,” said Schneider, who said she always asks ad clients who most impacts their online strategy and Bradford’s name kept popping up. “There was a kinetic energy that made it a good fit.”

Bradford is taking over the job of Dave Karnstedt, who is headed to Silicon Valley VC firm Redpoint Ventures as an executive-in-residence. His departure has been long rumored internally.

According to sources, Bradford was unhappy at Spot Runner, the ad-services start-up that has received truckloads of funding, and even more attention when Bradford arrived.

Whatever the case, the former Microsoft exec left her job as national ad sales chief at Spot Runner, where she arrived just six months ago, to take the position of SVP of U.S. revenue and development at Yahoo.

Bradford will oversee sales, market development for advertisers, small business and HotJobs at Yahoo. She will report to Schneider, who is EVP of Yahoo’s U.S unit.

It will be a very tough gig. Yahoo is facing that soft U.S. economy, a weakened stock price after the takeover attempt by Microsoft and justifiable questions among advertisers about its effectiveness, as other sites like Facebook grow faster and with more attractive demographics.

Yahoo is likely to also have to deal with new regulatory scrutiny of its ad businesses, since it was reported yesterday that the Justice Department might block the deal Yahoo recently struck to outsource some of its ad sales to Google (GOOG).

Bradford insisted that Yahoo was still a major force, underscoring that for all its troubles, the company remains one of the top online ad sellers: “My approach has always been about giving advertisers the product they want. … Yahoo has a lot of assets for me to play with.”

Schneider added that the job Bradford has is larger than Karnstedt’s, in order to be able to offer ad clients as many different kinds of Yahoo ad product as possible in an integrated solution.

“It is a different role in that it aggregates all of ad revenue … and touches teams in all of our ad businesses,” said Schneider, who noted Bradford’s job does not include its overseeing its publishing relationships, including a controversial recent deal with Google. “It’s the whole magillah.”

And Bradford knows from gorillas. Previous to Spot Runner, she was a VP and chief media officer of MSN Media Network and has worked at the software giant for a long time.

At Yahoo, where she will start in two weeks, she will not be the only former Microsoft exec–content head Scott Moore, who also reports to Schneider, was a longtime exec there.

It’s a sneaky kind of Microsoft invasion, if you think about it.

Bradford, who left Microsoft right after it made the now-failed bid for Yahoo, said she looks forward to wrangling with her former company in the ad market, especially now that Yahoo has to carve out new roads following its decision to resist.

“Everyone needs good competition, and it will be fun to compete [with Microsoft],” said Bradford. “I think Yahoo is at an interesting point of changing and growing its businesses … but it is still in a leadership position and there is a story to be told around that.”

The departure of Dave Karnstedt, who took over last year when longtime Yahoo ad sales exec Wenda Millard left Yahoo in the first of many controversial partings, has been long rumored internally.

(In fact, I have driven one of Yahoo’s PR people crazy in recent months trying to verify a persistent tip I had been getting that he was headed out the door.)

Karnstedt will be joining Redpoint Ventures, a Silicon Valley venture firm, as an executive-in-residence.

And, in a rejiggering and addition of duties at Yahoo (YHOO), Karnstedt’s job and more is going to Joanne Bradford (pictured here), a longtime and well-known Microsoft (MSFT) exec who decamped from the software giant to helm national ad sales at trendy ad services start-up Spot Runner just six months ago.

There have been rumors swirling that Bradford was unhappy at the smaller company after working at the giant Microsoft.

She was EVP of National Marketing Services, focused on national advertisers, for Spot Runner, joining in a high-profile move in March. Previous to Spot Runner, Bradford was a VP and chief media officer of MSN Media Network, and had worked at BusinessWeek before that.

In any case, the move will be seen as a blow to Spot Runner, which recently did some unusual layoffs, despite receiving a large slug of cash from investors.

(Here is a post and video I did on a recent trip to Spot Runner, including an interview with its CEO Nick Grouf.)

“I am going back to my entrepreneurial, build-something roots,” Bradford told me at the time she joined Spot Runner. “There is such inefficiency in buying and selling of advertising and someone has to solve that, both for big companies and small ones.”

Well, welcome to Yahoo, Joanne, which could use a little efficiency in its buying and selling of ad sales!

Seriously, Bradford will now will take over as SVP of U.S. revenue and market development at Yahoo at a very dicey time.

Besides facing a withering U.S. economy, a weakened stock price after the takeover attempt by Microsoft and ensuing mess related to it, it was revealed that the Justice Department might block the deal Yahoo recently struck to outsource some of its ad sales to Google (GOOG).

Yahoo said that in this newly created role Bradford will oversee sales, market development for advertisers, small business and HotJobs. She will report to Hilary Schneider, EVP of Yahoo’s U.S unit.

Karnstedt, whom I interviewed when he first took over ad sales a little more than a year ago, is leaving to pursue other opportunities.

In Silicon Valley, that means the inevitable stop at a VC firm. Hence, Redpoint!

Interestingly, he joins former Ask.com head Jim Lanzone at Redpoint, while former Yahoo execs Jeff Weiner (Accel Partners and Benchmark Capital) and David Goldberg (Benchmark) also landed cushy EIR gigs after leaving Yahoo.

Karnstedt had been SVP of U.S. sales at Yahoo and had apparently resigned from the company earlier this summer (thanks for not confirming that when I asked so many times, Yahoo!)

With Yahoo seven years, he was charged with the difficult task of integrating Yahoo’s search, display, Blue Lithium and Right Media sales teams.

And while Karnstedt was well liked, many complained that the longtime online ad techie was not enough of a gregarious and schmoozy ad sales exec, with deep relationships on Madison Avenue, as Millard–and Bradford–surely are.

As I wrote in Aug. 2007, after an interview with him at Yahoo’s New York offices:

I made the point to Dave (he is the kind of guy you can call Dave, as you can see pictured here) that an ad guy needs to sell himself, but to no avail, so we press on in text. Nonetheless, let me set the visual scene:

Nicest guy you ever want to meet walks into nondescript room, wearing khaki-oxford-jacket Internet uniform 101. Declares Yahoo is going to kick some advertising butt in the nicest possible way. It is revealed this nice guy has been around the Web block for quite a while. Much chitter-chatter ensues. Cut to my clear-as-Fiji-water observation that nice guy, as nice as he is, has his work cut out for him.”

And now, more than ever in Yahoo’s key ad market, so does Bradford.