Same here lisa. The assumption may be that you'll get signed with MSPs who not only accept your application through Archon, but that also may/will have shops in your area. It's a bit helpful, I suppose. But, not all MSPs, Prophet or otherwise, email shop availabilities. Following my master signup, I've found that I actually was signed with Prophet companies who had shops where I live - and I didn't even know the MSP. I occasionally check with JobSlinger (who has MSPs other than Sassie), and that's how I found out.
It would be helpful if, after submitting the master signup, a list was returned that showed which MSPs accepted the application. I did get a few confirmation emails from some. And, then what happens when MSPs lose and gain clients? I don't imagine the master signup perpetually updates for us.