Interesting project. A few of the immediate problems I see:

1) It looks far more like people just posting an introduction about themselves. Let's say that a month from now you have 200 posts on it, and I'm looking to see if anyone wants to get lunch in Santa Monica. This doesn't appear terribly easy, and being lazy I'm not going to spend more than about 1 minute trying to find people.

2) I don't see that any of these expires. If I post for lunch in an hour and a half or so, it will live on forever. This is much more an event and time-based thing, yet the records live on more like a blog/news/announcement section.

Dates, times, and locations should be displayed well, a search by city would be most useful as well.