your drop downs in registration seem slow... heavy in javascript maybe? I really hate all these sites with 'blog' and microblog stuff... basically I'm saying how many 'blogs' do I need? I don't mind it but I'd personally rather have one that ends up on all... maybe add a way to grab feeds and post with those? and whatever you do feature wise in the future don't make messaging unfree. I refuse to pay to send a message to someone.