I like it too, but the [lack of] critical mass of people I want to "share" with concerns me. Facebook, like it or not, has the mindshare. I'll use it of cours

I like it too, but the [lack of] critical mass of people I want to "share" with concerns me. Facebook, like it or not, has the mindshare. I'll use it of course; maybe people will migrate like they did from MySpace. Then again, maybe I will too to the next thing.