Which Y Combinator company would you fund?

moki.tv - It takes the best of all worlds (Netflix, Amazon, iTunes, Hulu, etc.) with respect to online video and spins it with IMDB and Facebook.

AppHarbor. I can't wait till I've got some spare time to go play with what they're doing. I suspect they're going to be ridiculously big even if .NET isn't very popular in these parts.

This list (allthingsd list) isn't complete. I'm not sure if there is a reason why some are missing, so I won't spill any names.

Grubwith.us is really appealing to me. I've wished for something like that for some time now. If I could make it, I'd be grubbing with them today..<p>I also think the concept is very appealing to restaurants as well. Adding value for everyone seems like a sure win to me.

All of them. Yuri Milner style. Diversifying your investments in YC's portfolio would be better than an index fund, I guess.

lanyrd.com - I know nothing about any of them, but I like the idea.

Maybe convore? I am not sure, they sure got a interesting community