When Sun Microsystems (JAVA) Gadfly-in-Chief Scott McNealy made his infamous statement about online privacy in 1999, there was a horrified hubbub at the time that he had the audacity to say such a thing.

You know, that he actually uttered such a terrible thing as the truth.

What a shock then that everyone is now in yet another tizzy about Facebook changes to its Terms of Service, which pretty much state the obvious again by noting that Facebook archives info you posted, even if you quit the service.

As in, you probably can’t delete it.

No, you can’t–because you shared it, whether it be a photo, an email, a Wall post, whatever, already.

Because the fact of the matter is–since the moment the first caveman sent the first email to another Neanderthal–there has never been true online privacy for anyone who has chosen to participate in this highly interactive medium.

Here’s the key definition of interactive: “mutually or reciprocally active.”

That means once you send something to others, it is out there in cyberspace forever, never ever to return.

And that goes double on social-networking sites, where–let’s be honest–people egregiously overshare and then get all righteous when it is explained to them that sharing means, um, sharing.

As in: You cannot take it back, if you have shared with 476 of your closest “friends,” your bikini shots from Cabo.

Now, BoomTown has learned to live with some very unfortunate haircut choices preserved forever online and does not often agree with Facebook founder Mark Zuckerberg (I and everyone else slapped him silly on the Beacon debacle until he gave in, for example).

But he is technically right on this, even if Facebook could have done a much better job communicating the changes it made to its ToS, especially since ToS controversies are the Bermuda Triangle of the online arena.

This lack of clarity has always a major Facebook weakness, but it was the same for AOL–now owned by Time Warner (TWX)–back in the day when it was raising privacy red flags all the time.

But that does not make Facebook wrong, as Zuckerberg finally said clearly in a post on Facebook:

People want full ownership and control of their information so they can turn off access to it at any time. At the same time, people also want to be able to bring the information others have shared with them—like email addresses, phone numbers, photos and so on—to other services and grant those services access to those people’s information. These two positions are at odds with each other. There is no system today that enables me to share my email address with you and then simultaneously lets me control who you share it with and also lets you control what services you share it with.”

Zuckerberg then notes that users are just going to have to trust services like Facebook with their data, which is up to the individual to decide before posting whatever online.

And, if regrets come later? Well, try this quote from the great playwright Arthur Miller: “Maybe all one can do is hope to end up with the right regrets.”

Since BoomTown did an obsessive countdown after Yahoo CEO Jerry Yang last year unwisely promised a 100-day, top-to-bottom look at the company, with “no sacred cows” spared (as it turned out, they all were), I decided that–after the month-mark had passed since Microsoft (MSFT) made its unsolicited bid for Yahoo (YHOO)–it was time for a count-up!

Thus, Day 32 (we’re counting from Friday, Feb. 1, when the offer was made public)!

And, frankly, with the added Leap Day this year to add to Yahoo’s agony, this battle is getting about as exciting as Yang’s 100-day slog–with nothing really page-turning on the horizon since Yahoo’s board kicked Microsoft’s $31-per-share offer to the curb several weeks ago.

Now, of course, Microsoft is returning the favor by loudly prepping a proxy fight and trotting out Silicon Valley companies like TellMe to report that a Microsoft takeover is just hunky-dory.

“We are pretty much doing everything we were doing before–just a lot more of it,” said TellMe head Mike McCue to the Associated Press, with the cheeriness of someone with acute Stockholm syndrome and $800 million in Microsoft money.

And if happy, shiny, Windows-cash-gorged tech people don’t impress, according to several sources close to Microsoft, perhaps a little fear factor will work better.

Said these sources, there will be “three to four big-name CEOs” on its list of new board members that Microsoft must nominate in the next two weeks for its slate of directors to replace Yahoo’s current board.

BoomTown recently reported that the software giant was sniffing around for prospects in Silicon Valley.

But, sorry to say, I still cannot figure out what CEOs these are, despite a lot of effort to find out.

So, I started trying to figure it out myself, focusing on tech and Web execs, who are the obvious choices.

Nonetheless, after going over a long list of possible execs, none of the ones I considered seems likely to turn on Yahoo.

Intel? No, CEO Paul Otellini is on the board of Google.

eBay? No, that’s too big a move for the new CEO John Donahoe.

Sun? No, after Scott McNealy’s funny diatribes against Microsoft for so long, CEO Jonathan Schwartz simply cannot.

Dell? No, CEO and Founder Michael Dell has his hands full.

Amazon? CEO and Founder Jeff Bezos is sassy and lives up near Microsoft, but it would be a real slap at another Web icon like Yang.

WPP Group’s Sir Martin Sorrell? Well, to include an ad biggie would be a good move and Sorrell likes to make pointed remarks about Google, but not that sharp.

Frankly, other than non-tech companies, of which there are probably many choices who owe Microsoft in some way, I am officially out of guesses.

Well, of course, except for one Web 2.0 CEO, who has a big name and is in great–and I mean, great–debt to Microsoft.

In fact, $240 million worth of IOUs. In other words, Facebook CEO and Founder Mark Zuckerberg.

It would be ironic (Yahoo tried to buy Facebook a little more than a year ago), it would be poetic (only in Silicon Valley does the young eat its old) and it would be really fun to watch the fireworks (Facebook is no friend of Google’s).

Most of all, Zuckerberg on the board of Microsoft’s Yahoo would be Steve Ballmer’s ultimate SuperPoke at Yahoo.

Please see this disclosure related to me and Google.