The title pretty much says it all. Registration is open!
If you were contacted by one or more of the organizers, we have a special code for you that lets you bypass general registration. Otherwise it's limited to the first 100 or so people that get in (we had about 50 invites).
You will need an OpenID. I use, and am quite happy with, myOpenID. Be sure that you specify your email address in the persona you register with the altdotnet.org site.
We've negotiated a group discount at a nearby hotel. Check the logistics section on the event page for a link to the registration (with group code pre-filled).
Looking forward to a great event!