35. Richard Dawkins, Scientist and author
If you feel you've heard enough of the evangelical atheist's self-assured opinions, you'll probably want to keep away from his regularly updated Twitter feed. But more than 325,000 followers feel differently, and enjoy regular tweets on subjects ranging from science to secularism. His hackle-raising brand of atheism is the stuff of which abusive Twitter wars are made, but he refuses to rise to the bait. His feed consists mostly of links – not least to the website of the Richard Dawkins Foundation – and his followers can be assumed to be mostly in sympathy with his views.
Tweets as: @RichardDawkins PeerIndex: 70 Authority: 88 Activity: 65 Audience: 48 Follows: 47 Followers: 325,510Follow @RichardDawkins