
Last year I didn't know if I would be able to get someone to room with. The person I shared a room with at the 2009 con wasn't able to make the one in 2011. When I bought my membership I went ahead and booked a room with two double beds. I figured if I couldn't find someone to room with, I'd just switch to a room with a king bed. But I ended up rooming with someone from the CA forum and it worked out great!
I'm going to be lucky enough to room with her again this year. So, book the room with 2 doubles and keep the word out that you're interested in sharing.