CityXGuide is still there. It is mostly bots and dating site scams, but there a few real ones. They tend to be at the top, since they are frequently renewed and current. Once you scroll down a ways, none are real. You can tell by their inability to form a complete sentence in English, or the fact that they publish an actual price for an act. No real pro would do that. Neither would LE. Also the ones that only give an email address are fake. One way to filter out bots and scams is to log on to different cities and see the duplicates. A real ad will only be in one city at a time. If they are duplicated, they are fake.
I don't use the site for anything other than prurient curiosity, but you could get lucky. I have heard that LE uses this site for stings, so be careful.