The initial customers of Feedback Army seem to be folks with niche websites. The kind of stuff HN would probably flag if it were posted here. Also some folks aren't as plugged into an online community and may be uncomfortable posting there. I know I'm this way. I don't blog publicly and HN is the only board I interact on. So I'd use something like Feedback Army over risking my standing on a forum such as this for something off topic. That said, the feedback is paid for and there is nothing stopping someone from going back for multiple rounds in a few days on the same site. I think the free feedback givers might burn out a little quicker.
I guess that makes sense.. I wasn't thinking from the perspective of a non-developer or someone not as well connected, in which case I could see them wanting a generic service that offers feedback.
