A major downside of the proliferation of major blog sites (Windows Live Spaces, livejournal, blogger, blogspot, wordpress.com, etc etc) is that many of them require you to be logged in to comment. This creates the problem of needing to keep so many accounts that are only to comment, and while blogger is the notable exception, I'll never use them for anything else. Gods, the 'net needs more people to support OpenID (and a functional openid server for wordpress would be handy too).