Facebook ate MySpace, Wordpress ate every other CMS platform, Twitter has been eaten by himself (read: his spammers).
tumblr.
I think it is going to eat Wordpress among individual bloggers, because it is a very nice and configurable platform, probably the best i’ve seen so far online. It’s a bit slow, like twitter. By now i can’t understand if it’s me - i’m on an ADSL “borrowed” over the air - or the server. We’ll see.

Sure… probably in a year from now, we won’t remember what is tumblr.
Web is this, mobile web is almost here.