Yeah, I built it because no others worked the way I wanted them to. With that in mind, I wouldn't mind if nobody ever signed up for it, but I'd like to give it a good shot and see if there's interest.

As for finding other like-me users, I'm not sure...it's specifically built for single-person devs and at this point doesn't allow multiple users per account, so I suppose any number of freelance forums or communities would be good places to start (freelanceswitch.com comes to mind).

To answer your last question, I'm more looking for strategic feedback - I'd love to get a few testers to tell me if they would use it and if not, why not. And I'm sure that a couple bugs will be exposed in the process.