I'll see you (ILCU)

"ILCU is a gigantic network of hip-happenin' things to do and people to do them with in your free time. We created ILCU to fill the gaps in our social calendars with stuff and people that make us happy. Sure there are lots of event sites online: you can see events, but you have no idea who's going. With ILCU, you can see both."

I wish that they had a category for conferences, so if I am scientist and going to a conference I can see who else is coming too.