caffeine tech: SOPA makes Keanu Reeves sadder Was Wikipedia's big blackout protest against SOPA successful? Check out these big numbers. Speaking of big numbers, millions of people signed Google's anti-SOPA petition. Speaking of millions, Twitter racked up 2.4 million tweets about SOPA yesterday. Here's the RIAA's big dumb tweet on the subject that annoyed everyone. Speaking of Twitter, Facebook CEO Mark Zuckerberg tweeted for the first time since 2009 yesterday. Yes, it was about SOPA. Facebook, notably, did not go dark yesterday. If it had, here's what the social network would've lost. Meanwhile, Apple made a big announcement about digital textbooks today New York City today, but nobody cares. Foursquare now has 400,000 restaurant menus. The Kindle Fire update comes with full-screen web browsing. Take that iPad! In closing: BuzzFeed offers this chilling look at memes under SOPA.