I look for inconsistencies. Granted, YMMV, but multiple reviews lend clues. I recently saw an ad where she says she's 21. Clicked on her review page and she's got 16 pages of reviews (did she start when she was 12?).

When the ad says a breast size of DDD but the pics look like a B cup, etc.

I saw another where the top of the ad says "Check my reviews". In the text of her ad, she insists "no reviews". Hmmmmm.

There are also some ads that say "Check my reviews" only to find she must not have read her recent reviews because they aren't flattering.

I'm also leery of ones with name changes. I can see some legit reasons to change but multiple times sounds like somebody who wants to hide something - perhaps a scammer trying not to be caught.

I also look to see if the reviews show a declining trend. If she starts out with eights and her more recent ones are fives, that tells me she is either burned out or strung out and it is taking its toll on her. She probably either needs to take a long break or get cleaned up or find a new profession.

Cross-referencing reviewers is a great idea. If the reviewer's missives are all about the same agency and the girls are all scored the same, that's a big hint not to trust it.

Sorry, some of this isn't really on topic but I've been doing a lot of ad-reading and review-reading lately and I just have to vent. It's not something you can discuss casually with others.