Okay, brainstorm time.
We need a way to attract more members, and increase retention.
I was thinking about MMORPG's like World of Warcraft, and thinking what makes them so addictive and popular. It's the fact that the more you put into them, the better your character gets, which can be compared to others in the world.
In short, minus the psycho-babble... I'm thinking we need some kind of system that will make members go out and recruit more members... and those will spent lots of time on the site to put more into it, and get something out of it, a statistic of some sort (not reputation points, that doesn't work here).
Maybe I'm just mumbling on, but maybe this could be something to move us to the next level.