I floated this in the San Antonio forums and had a pretty good amount of positive feedback.
How about a forum in each city where providers could post their availabilty each day?
I know for myself, hobbying is difficult because I do not often know much in advance if I'll be able to get away that day to play. Then I start calling ladies in whom I'm interested that morning to see if I can schedule something. I've got to be honest, I only get about a 25% success rating because they're not working, completely booked or they don't get back to me. Their one ad for the week could be several days old also and not accurately reflect current availability.
I'm not talking about an ad per se, just something to let us know who's working that day. There could be limits on it like only one posting a day, no pricing info, etc. Maybe it could be another perk for Premium Members?
