My One-and-a-half Cents on App.net

I keep hearing around the web from people I respect that App.net is cool, but that it won’t survive unless it hits critical mass. That social networks in general have to have millions and millions of users, or they don’t work. The reason people believe this is that just about every social network up to this point has been financed by advertising (or not financed at all). If you want to run a service on ads, you need as many eyeballs as possible to cover your nut.…