As any MBA will attest, the present surplus of talented, out-of-work professionals lends itself to entrepreneurial opportunity. Even, it appears, if you're an entrepreneur who's already cornered your chosen market, as in the case of Facebook's Mark Zuckerberg who's planning to grow his staff by up to 50% this year. Yet, the world's most popular social network -- which already employs about 1,000 engineers, designers, and (ostensibly) a few ad salespeople -- is actually growing its workforce at a slower rate than "comparable" startups, Zuckerberg says. Google, for one, nearly doubled its staff every year between 2005 …

Once the domain of a select few mad-hatted gastronomes like Gael Greene and Molly O'Neill, food criticism is booming online.

What is the Apple Tablet, when's it coming out, and what does it mean for the increasingly interconnected worlds of online and mobile advertising?

What's to be gleaned from our collective emoting, explaining, and exchanging of ideas online? Let a sentiment analyst tell you.

Pardon the interruption. The New York Times just got serious about mobile advertising with a bold new roadblock on its iPhone app.

Organized properly, it's hard to believe that the wisdom of crowds couldn't improve upon Google Maps, and some eager entrepreneurs have set out to prove it.

Twitter's cofounder lays out a plan for city governments to improve the quality of life of their citizens on the cheap -- with Twitter.

Also in Twitterland: Co-founder Biz Stone says the company is starting to roll out commercial accounts to encourage business users to pay for premium services like analytics.

Also, also in Twitter news: Facebook is introducing a feature that can automatically cross-post updates from Facebook Pages on Twitter, but only for celebs and organizations at the moment.

Why are Facebook employees -- whom one might assume would be the slightest bit optimistic about a future IPO or acquisition -- rushing to cash out their stock options? Beer money? Or are they all just reading Blodget and tripping over themselves to buy Yahoo stock.