But just having 10K people who want App.net successful is not enough to get me to put in $50 (or to even try it out for free).
Now, if this a community of a 100 entrepreneurs, I might be more interested. Perhaps, you guys need channels for various groups or something.
My point is that I cannot yet find an excuse to see why you will be successful and therefore would want to bet anything on you. Help me find that excuse :-)
I understand your uncertainty, however I encourage you to search twitter for people who have pledged their support (we have highlighted a handful on join.app.net). I think you'll be pleasantly surprised!
I definitely want to support entrepreneurs and App.net. But, quite frankly I don't see how they are going to build a user base.