I agree. I think a good way to identify original source content is through author attribution, with trusted identities, in a social graph, curated by users in

I agree. I think a good way to identify original source content is through author attribution, with trusted identities, in a social graph, curated by users in a web of trust. Hmm... That sounds like exactly what Google+ is doing. If you happen to Encircle someone who created the comment in the first place, it's debatable about which post you'd rather see higher.