That's a good idea too. Tricky though - for example an article on HN might get read by thousands but is it "viral"? For the second, I meant I would want to car

That's a good idea too. Tricky though - for example an article on HN might get read by thousands but is it "viral"? For the second, I meant I would want to carve out an exception for major politicians, because I think it's dangerous for say Twitter to decide what the President can or cannot say (that's not what I wrote, but what I meant to write!). Instead I'd rather Congress decided and Twitter enforced those laws, if any.