I don't know if this is something anyone else is interested in, but it could help organize some threads, such as the best current credit card sign up bonuses thread. A feature could be added to some posts in which multiple users could edit it, in order to facilitate updating the page. As it stands, an authoritative post on a particular issue can only be updated by the OP, who may not have the time/ability to keep it updated, and additions to the topic get lost in the shuffle of posts. I think it's implemented pretty well on Slickdeals.net, except a way to limit the wiki feature to select threads seems ideal. Don't know if this is too complicated/not implementable/just a dumb idea, but I thought I'd make the suggestion!