On Victoria CL, you go to services, click on erotic, then click on w4m.
You will find many of the well reviewed sps, and those who pay for advertising, also advertise there. If you are uncertain of someone's ad, call them up and talk to them. You cannot go wrong if you confirm rates, services, and personality with a voice-to-voice phone call. For instance, even tho she agrees to everything and sounds like everything is on the menu and at a low rate, you may get a bad vibe from how she is saying it or even her manners on the phone.
You can also do a quick review check to see if there is anything written up or you can simply choose to only see an sp with a review until you get a really good idea of what you like, don't like, and what you are looking to get from using this sort of service. (It's not like a date, and it isn't unlimited no restrictions fantasy porn star action either, so it is best to get some sort of realistic expectations firmly planted in your mind lol)
I think you will find that many use CL because of the lack of advertising available and its extremely high volume of viewers. A lot of sites focus on major cities and there isn't much point for an escort to pay for advertising on a site or newspaper that doesn't have a lot of traffic.