I’ve been active in the Google Mobile Help forum (users help users forum run by Google for it’s Mobile services, with the additional touch of google employee presence). To encourage people to keep on helping they use something called Levels. I have no clue about the exact algorithm behind it but it seems to build on your amount of answers, correct answers. And so on.
To the point, a while ago I became the first user to reach level 3, cute. Last Friday I got to Level 4 which turned out to be the highest level, now we’re talking! :)
If I’m not misstaken I was first again which is always nice, especially since this is a global forum for all their Mobile services, I’m quite flattered actually. I’ll send you my application later on Google :D