Apart from helping you identify the really big users, this graphic tells you absolutely nothing at a glance. It’s not even useful to identify Twitter’s most followed user – you have to glance around a bit and decode the numbers to figure that out.
And the categories are far from useful: Michael Jordan is halfway between music and sport, while Conan O’Brien is under entertainment, but has no crossover into humour at all. Bill Gates and Eric Schmidt are classified under technology, near art and design but miles away from business.
Pure gimmickry, and not even that appealing visually. Or am I missing the point?