http://stackoverflow.com/faq
This looks like something that will catch on sooner or later. IMHO
"Reputation" is a very social thing that is missing from all those
Social Apps out there.
It's commonly accepted that we are social creatures by nature, and
part of being social includes rankings. Whether you like it or not,
rankings is vital to a society.
As in "How important are you?"
We need a mechanism to rank a user -- higher ranking, higher
reputation.
For a start Stackoverflow's Reputation system looks promising enough.
What you thoughts?