Just an idea but why don't you make the escort ads on the area/town lists a different colour if they're not available at the time you're browsing? I mean say it's 1 a.m. and I'm looking for something to entertain myself, sometimes I may have to look throguh 5 or 6 profiles before I even find one that says she's available at that time. It'd be nice to have a small indicator of that on the profile lists.
If you need someone to do it for you I'd do it no problem. I've been running/designing/editing and customising boards for a long time and PHP is my god