My good friend Dave Kim has set up a website for ALC riders who would like to get connected with a tentmate BEFORE having to stand in line and be assigned one on Day Zero and get the luck of the draw...
The Tentmater website is HERE
Basically, you go on and provide your profile info. It's free. You can view the person's picture (if they post one) and their info by clicking on the little magnifying lens icon under "view". Then, if you think it might be a good match, drop them an email and see what happens.
Once you get "matched" don't forget to remove your profile so that others are not sorely disappointed by your unavailability! (and they won't have to waste time figuring out who's matched and who's not!)
Thank You Super Dave!