Followers: 1.4 million
Sample tweet: "Walked the dog in 6 degree weather this morning. All I could think was: THE AIR IS TYING TO MURDER ME."
Author and science geek Steven Johnson knows what makes the Internet tick. His 2005 best seller Everything Bad Is Good for You: How Today's Popular Culture Is Actually Making Us Smarter even suggests that the Web information onslaught isn't just a recipe for attention-deficit disorder. This means you could follow all 140 of TIME's Twitter recommendations and wind up brainier than before.