I’m all excited about this, as I’ve been a long time advocate of WordPress. The back-end admin interface is excellent! Much better than 1.5.x.
Smaller selection of themes than what I’m used to, but that’s alright. I hope this’ll change through time.
I’ve heard the odd mumble that WP.com is slow, but that doesn’t seem to be the case here. The AJAX stuff is certainly interesting, and I like the way you can show and hide less used parts of the posts screen. You can even drag them around to suit yourself, which is nice, because the initial order isn’t wonderful.
I’m not sure if this’ll be my primary home on the web, but I’ll give it a go to see what happens.