Specifically:<p>Facebook looks like it's dead in the water for our crowd.<p>Twitter seems to be a common choice.<p>Has App.Net grown enough to be useful?<p>For an entertainment startup that releases content in a blog format, are blog comments useful? Could they be used as the primary/only means of interaction?<p>My ideal scenario would be using on-site comments for all interaction, and using Twitter/Facebook/whatever to act as feed-broadcasters (via IFTTT or similar). However, I feel like I'm missing something here.<p>Any and all advice is appreciated.