Back on April 7, Tim Armstrong sent a memo to the long-battered troops of AOL about a 100-day vision quest the new CEO and chairman was going on to find out “how to bring back the magic of AOL.”

It is now Day 86, and Armstrong is closing in on the end of a Where’s-Waldo commitment that he made then to visit all of the far-flung offices of the Time Warner (TWX) online unit globally.

More importantly, as it is almost over, Armstrong also has to make good on another promise he made in that memo he sent to the staff on his first day:

“The culmination of the 100-day process will end in Dulles with an All-Hands meeting in mid-July. At that meeting, we’ll review the feedback we’ve received–both internal and external. We’ll also discuss our strategic direction for the coming years, and highlight areas that will bring AOL and AOL properties into the next decade of digital leadership. Most importantly, we will set a course and focus all of our resources to make that course a success.”

BoomTown is eager to see what Armstrong has found out on his trip and what path it will ultimately put AOL on.

So far, the broad outlines of his strategy seem to center on expanding AOL’s content assets, strengthening its advertising network and getting out of businesses the company cannot compete well in, such as social networking.

What other pearls of wisdom Armstrong has gleaned are to still to be revealed, presumably.

His corporate version of “The Amazing Race” is certainly a novel idea, born at his first all-hands meeting in Dulles, Va., which used to be the world-wide HQ of AOL and remains its heart.

There, Armstrong (pictured here) joked to the crowd:

“I know that work goes on across the globe and, in the first 90 days, I’m going to try to visit every office we have and sit down and talk to every employee and that will be something that my wife has actually agreed to let me do so.”

Thus, spouse-approved, the former Google (GOOG) exec has circumnavigated the globe and has held meeting with employees in a wide range of places: Dulles; New York; Baltimore; San Francisco; Mountain View, Calif.; Toronto, Lancaster, Pa.; Denver; Hamburg; London; Paris; Bangalore; Dublin and, this week, Tel Aviv.

But it has not been all tourism, in search of innovation.

During this time, Armstrong has also dispatched employees and top execs, such as advertising head Greg Coleman and communications and communities head Joanna Shields, and hired a few key staffers of his own; announced a pending spinoff of the company; and bought some stuff (including a company he funded).

It will be interesting to see what comes next–after the 100-day gathering in Dulles, which should come sometime after Armstrong’s July 15 deadline, of course.

Party on, Tim.

Yahoo’s top mobile exec, Marco Boerries, is departing Yahoo, according to an internal email obtained by BoomTown that he sent to some staffers on Sunday.

I have also confirmed Boerries’s departure with company insiders familiar with the situation.

In a post Monday on a management restructuring at Yahoo (YHOO) that new CEO Carol Bartz is likely to unveil to the company this week–sources tell me it is now set to be announced internally tomorrow–I noted that Boerries was one of the more likely high-level execs to go.

He has been the EVP for the Connected Device Division at Yahoo for four years, coming to the company in 2005 with the acquisition of VerdiSoft. He also had earlier sold another software company to Sun Microsystems (JAVA) in 1999.

Nonetheless, many inside Yahoo expected him to go with the changing of leadership recently, after almost two years of turmoil at Yahoo. Like many, he reportedly wanted to leave earlier, but felt loyalty to former CEO Jerry Yang.

I wrote:

Boerries, a talented but more freewheeling exec under Yang, is another question all together. Already wealthy from selling several companies, the entrepreneurial exec is most often mentioned by sources as someone unlikely to stick around, especially if Bartz tries to rein him in more. (In addition, Boerries has family issues requiring that he spend a lot of time in his native Germany.)”

In his email, Boerries did not mention Bartz, but did indeed mention his personal issues.

“With a very heavy heart I have to tell you, that I will be leaving Yahoo!,” Boerries wrote, attributing his departure in an email titled “Personal Update,” to issues related to his family.

Because of that, Boerries has more recently been splitting his time between Northern California and Hamburg.

In the note to staff, he also noted all the successes Yahoo has had with its mobile and other device efforts.

It’s unclear what the impact of Boerries’s departure on Yahoo’s Connected Life unit will be.

But it seems more likely than not that Bartz will cut back, given that it is harder to monetize now and also because Yahoo does not have its own device, as both Apple (AAPL) and Google (GOOG) do, which might help it create a more virtuous ecosystem.

Still, Yahoo has some extremely interesting products in the mobile space and, as is typical, really well done, such as many parts of its oneConnect service for smartphones.

In addition, Boerries unveiled a pretty interesting Connected TV effort at the Consumer Electronics Show in January, although this is also an area still struggling to find a lucrative business model.

Here’s a video of me interviewing Boerries, as well as Yang and outgoing President Sue Decker, about Connected TV:

And here is the Boerries goodbye memo in its entirety:

From: Marco Boerries
Sent: Sunday, February 22, 2009 12:06:30 PM
Subject: Personal Update

Marco

I have no idea, nor do I know why Burda broke out into song either–how much do you have to love a media mogul willing to do that?

But I got it all on video and a whole lot more on the last day of the pre-Davos European gathering focused on digital issues and innovation.

(And here is a post by European serial entrepreneur Martin Varsavsky, who apparently thinks his video shows that Accel Partners’ Simon Levene and I were not impressed enough by Campbell.)

In any case, DLD’s motto was: “Uploading the 21st Century.” And while it did not quite do that, there were definitely a lot of interesting moments I captured for your viewing pleasure.

Along with Campbell (who was supposed to appear on a panel on Africa, but did not) and a singing Burda, the video features clips from two sessions today.

The first was titled “Exploding Media” and included: pundit Clay Shirky riffing on flash mobs; a very funny clip of kids talking about television (made by Technorati’s Peter Hirshberg); Google’s Marissa Mayer noting that Google will still not be in the content business; Yahoo’s Bradley Horowitz discussing Yahoo’s plans to de-focus on making original content; and BuzzMachine blogger Jeff Jarvis advising old media to just ask WWGD? (What would Google do?).

Another session on the video features the founders of the genetics-focused social-networking company 23andMe–Anne Wojcicki, Linda Avey and Esther Dyson–answering questions about fears people have about learning too much about DNA.

Here is the video (and now I am off to Hamburg to visit Xing, a business social-networking company):