Quora awards people who contribute regular high quality answers by naming them Top Writers. The exact criteria is still a bit of a mystery, from what I can tell. They choose somewhere around 500 Top Writers per year (but don’t quote me on that). They invite us to events with Quora staff, give us gifts to recognize our contributions (a jacket this year — in years past they’ve given bags, NYT subscriptions, and other things). We’re also invited to test new features before other users and we can access a private group where we can report bugs, suggestions, and complaints.