I now work on the basis they are all fake unless they have good reviews somewhere, even then they can swap the girls.
You do keep an eye open though just in case there is a real gem out there that you might miss. I have found one or two real ones.
You can almost tell now by the lack of enthusiasm in the initial responses. You can tell they are just going through the motions. And always claim photos are 100% real even if the lady looks absolutely nothing like the photos.