"Yes, we view this feature as directly competitive to a relatively small part of our Top Friends functionality," Slide's Keith Rabois told us. "A developer on any platform must expect that their popular, but simple, features will be absorbed into platform over time."

But none of this has the salesman in Rabois down. He goes on:

You can see that Top Friends has a very large number of complex features that have a complicated back-end (Awards, Visual Personality, Music, world-class skins) — we expect those will continue to be long-term strategic advantages over other large developers and the platforms themselves

The secret of social networking revealed: world-class skin! We always suspected as much.

There are policies Facebook has issued, but there is always room for interpretation - and in light of current changes, the interpretation is a lot more stringent now in contrast to before.

Facebook's probably getting strict because its preparing for a relaunch of its design in July. Or — and this pure speculation — the third-party security firm Rock You's rival Slide hired to audit its own privacy might have gotten paid a little extra to take a close look at the competition and alert Facebook to any infractions. We wouldn't put it past hypercompetitive Slide founder Max Levchin and his crafty sidekick, Keith Rabois.

Slide rival Rock You's Super Wall saw traffic plummet 70 percent in the last week. InsideFacebook's Justin Smith speculates the dip is due to "some kind of punitive action against the application" over privacy concerns by Facebook, "perhaps by restricting feed access or by lowering the application’s notification or invitation limits." Another source tells us Flixster, the widgetmaker behind the Movies app, is going through similar punishment from Facebook over privacy concerns.

Facebook's upcoming redesign eliminates much of the viral growth widgetmakers such as Slide enjoyed during the platform's first year and these developers aren't happy about the changes. Last month an executive at one of the widgetmakers told us this lost enthusiasm for the Facebook platform seriously damaged the company's value.

FB's valuation is driven by the perception it can serve as a platform (or launching pad) for derivative businesses. Without that perception, FB is a $3-5 B company. Period.

• No incentives may be given to a member for sending a message, bulletin, comment, or any other form of communication. This includes "points," "bucks," increased standing, or even features within the app.
• It must be very clear to a member what they are sending, when they are sending communication. "Share with friends" is not sufficient messaging, the link must state "send comment," "send bulletin," and so on.
• The "no popups" rule we have had in place since day one applies to messaging windows. This means no more popping up a messaging window the first time someone tries to use an app. No popping up messaging windows without a user clicking on a very clearly marked link.

Previously:

• A is for Adelson, who cofounded Digg
• B is for Botha, who sold YouTube big
• F is for Fitzpatrick, and "hookers and blow"
• L is for Levchin, who never goes slow
• P is for Parker, the Valley's bad boy

Consider the value of other companies that deliver entertainment: Disney (DIS), Time Warner (TWX) and Sony (SNE) have a combined market cap of over $168 billion. Gross revenue for the NFL and MLB last year exceeded $12 billion. Apple (AAPL) made nearly $2 billion through iTunes music sales alone. Social networks benefit from increased activity, advertisers benefit from an exuberant audience, and widget users can, well, share favorite "American Idol" moments, send virtual margaritas or trout slap each other.

We're just not sure Slide or any other of the widgetmakers are there yet. Scrolling through Facebook's application directory, we mostly find the Web's version of road-trip distractions like the find-all-50-states-license-plate game or the one where you guess the name of the person I'm thinking. They pass the time, sure. But are they the next American Idol? No.

Or not yet. Rabois, and his boss, Slide founder Max Levchin, will work until they get there. For an idea how they might, we suggest they and you check out Draw My Thing from Iminlikewithyou, a sort of Pictionary for the Web. Just remember, Keith: You type the answers rather than call them out.

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With LinkedIn projected to earn 2008 revenue between $75 million to $100 million, former LinkedIn exec Keith Rabois, now at Slide, told the paper Hoffman and company need to go public sooner rather than later.

"Right now, LinkedIn just doesn't seem to be at the center of the Internet universe and an IPO would be an amazing marketing opportunity," he said.

Others aren't so bullish. After CEO Dan Nye said the company would only sell for "a lot more" than $1 billion, Silicon Alley Insider guffawed, noting that career site TheLadders.com recently poached LinkedIn's former head of corporate sales, Brendon Cassidy, with ease. Would he have stayed if he believed in LinkedIn's revenue upside? That's the question the Herald should have asked Rabois.

The insular crowd, however, all but ensured I'd meet up with Ghosts of Valleywag Past. No, not a spectral Nick Douglas or a scary Nick Denton — but other people I've read about, or written about. That vaguely familiar girl chatting with Jeremy Stoppelman? Oh! It's his ex-girlfriend Liza, reportedly the center of love triangle involving Valley good-time-guy Sean Parker. There's Steve Chen, the YouTube founder, with spiky hair and glasses, holding hands with his girlfriend while bidding Stoppelman adieu. Over there, by the bar, is Ooma CEO Andrew Frame, wearing a form-fitting leather jacket and sporting bangs. Bangs? Really? And Keith Rabois, the ex-PayPaler now at Slide, with the controversial Stanford history.

Then I met Snocap founder Jordan Mendelson, whose appearance with a bevy of beauties at last year's Yelp party lead us to crown him the Valley's newest bad boy. Boy did we peg him wrong. My first thought, after taking in his supreme untallness, was that he seemed like such a nice guy. And so unassuming. The expression of smug self-satisfaction in last year's pictures was missing. As was, apparently, his job.

I asked about Snocap, the troubled music startup he founded with Shawn Fanning, whom he worked with at Napster. Mendelson confirmed our rumor that he had left for another project. So, was he going to indulge his Valleywag-created persona and party hearty all night? Sadly, no. Mendelson begged off early during the afterparty at Mr. Smith's, in order to prepare for a venture meeting today. The bad boys are growing up — or at least learning when they need to put on appearances.