These are not addressing the same problem, which is that we're shifting from a stand alone idea sharing platform model to a community idea sharing platform mode

These are not addressing the same problem, which is that we're shifting from a stand alone idea sharing platform model to a community idea sharing platform model that needs consolidation from the inherent fragmentation of the ecosystem (Quora, Hacker News, etc.) I think those are all trying to tackle a subtle difference than what I am talking about. About.me and Flavors.me is more so about one off content creation and status profile sites (blogs, twitter, linkedin, facebook). What I'm saying is that things like Quora, Hacker News, are now becoming the preferred medium to share ideas as opposed to standalone sites. Many Quora answers are essentially blog posts.