Myself and Yogi are considering writing a plugin to allow users to rate posts from say 1..10 so that members who make the best contributions will have higher ratings. These ratings will then be shown under usernames as a star rating (stars can be changed to whatever you want) - so at a glance you can tell who the highest rated members are or those who provide the best or most helpful answers.

Would anyone be interested in this or does anyone have any thoughts?

Yogi may add extra to what I've said if I've forgotten something ;)