1). Huh? That's giving quite the benefit of the doubt. Kind of like how burglars are really just on a spree to make sure that that home-security companies continue to have a profitable market. I take issue with the idea that press that questions the tenets of this company is going to cause more people to donate.
2). I don't like it when people can attack someone trying new business ideas on pure speculation. That's just a mean thing to do. Also, I take that you don't mind the FUD that the post perpetuates if there's enough sprinkling of humility for you to pretend that it's balanced?
Well - I actually concur that any press is good press at this point. It's not like anybody who has already pledged, can (easily) revoke that pledge. The only downside is it's hard to believe anybody who might read Siegler hasn't already read about app.net - so the additional exposure is minimal. (I backed app.net - fingers crossed Dalton hits the $500K/10,000 original users level)
2.) I don't like the tone of your comment - take a look at this thread: http://news.ycombinator.com/item?id=4354635