1. Game on, Google: Goldman Sachs and Digital Sky Technologies have invested $500 million into Facebook in a deal that values the social network at $50 billion — which is more than eBay, Yahoo!, and Time Warner. [via Gawker]
2. Little Fockers took the New Year’s weekend box office, raking in over $26 million in ticket sales. In second place was True Grit, which made almost $25 million (and is now the Coen Brothers’ highest grossing film ever), followed by Tron: Legacy 3D, which took in a little over $18 million. [via Deadline]
3. In case you missed it, on New Year’s Eve Lady Gaga tweeted, “THE SONG 2 13 11 THE RECORD 5 23 11,” meaning of course, that her much-discussed third album, Born This Way, finally has a release date: May 23rd. [via Vulture]
4. David Arquette checked himself into rehab over the holiday weekend, and is seeking treatment for alcohol and other issues — but not drugs. [via TMZ]
5. After almost seven years of dating, Mila Kunis and Macaulay Culkin have split up, according to her rep. A source says that it happened a while back, but they decided to keep things quiet while she promoted Black Swan. [via NYP]
Bonus link: New Yorker Four Loko Cartoon