eldavojohn writes "Considering IBM's portfolio gained 6,180 last year alone, it's not a huge number. But after a dispute with Yahoo a couple weeks ago, Facebook has purchased 750 patents from IBM. That's over thirteen times the 56 they were reportedly holding. The humorous rumor is that Yahoo might have been licensing these patents from IBM. If you can't beat 'em, buy the patents they're licensing from another company. Another rumor is that Facebook might be just getting started in their bid to expand their patent portfolio (video). No word yet whether the purchased patents directly pertain to Yahoo's infringement claims on messaging, privacy controls, advertising, customization and social networking."