This is not the only review site, just probably the largest. Look elsewhere, I can't name the other sites here, due to TER rules. If you can't find them anywhere, pass and move on. None of us will recommend anyone, especially a newbie, to see someone with no reviews. It just ain't smart. BTW, you didn't mention the results of your googles. Are either of them on any of the verification sites, like DateCheck, P411, or RS2K? That would help establish their legitimacy. Do they have websites? That would help too. Are they young, like 18-22? I didn't look at their ads before answering your post.
It's not a given that these two girls are bad news, but in my eye, unless you can get some more information on either of them, I'd say again, move on.
Swim