Finally, you can upload your own personal avatar! Go to the My Profile page after logging-in, and click 'Select'. You'll find a link in the popup.
Tell me if you encounter a problem, because I haven't done very much testing on it.
Now... if the site goes down tomorrow (or in fact, any time in the next few days), it'll probably be a good thing, because it means we're moving. If I mis-time the database and file sync it'll be a bad thing, so let's hope I don't :). The site should then be back up within a day... fingers crossed