When I joined Quora I found it somewhat interesting. I soon realized that it was nothing more than a sleazy gossip web rather than knowledgable people answering questions. Repetitive questions, no controversial comments the moderators don't like, they make it difficult to leave. Censorship by those who think they are smarter than you and exploiting the participants by slyly interjecting commercial ads. Not at all the unbiased exchange of ideas. A farce.