Answers are NOT collaboratively edited. It's a hybrid approach - Questions are communal; Answers are personal but voted and commented; Answer Wikis (infrequent

Answers are NOT collaboratively edited. It's a hybrid approach - Questions are communal; Answers are personal but voted and commented; Answer Wikis (infrequently used) are communal. Also, Quora provides "Posts", which are not associated with Questions. They are much-more blog-like (and the main criticism of Scoble's answer was that it should have been a a post).