I seem to be on a recognition kick lately.  In addition to running across the reputation patterns the other day, I just ran across a great presentation by Bryce Glass on getting started with reputation systems.

Again, I personally think the notion of reputation being discussed is being blurred a bit by things I would consider to be recognition aspects...but maybe it's a toe-may-toe toe-mah-toe debate.  Regardless, there's some great questions raised in the presentation.  I'm still digging through it, but hope to post a more thoughtful response in the future.  Thanks, Bryce!