So, it's like HN?. On a more serious note: Twitter has a large following of powerful/smart people who don't leave over night. Sure, over time these people cou

So, it's like HN?. On a more serious note: Twitter has a large following of powerful/smart people who don't leave over night. Sure, over time these people could leave, but why would they? What would a twitter competitor offer that twitter can't offer?