One thing I've noticed about all these ads, whether on Backpage, Eros or elsewhere, is three things, besides no reviews or bad reviews:
- The shots are very glamorous pictures
- The shots do not expose much - bikini is the most revealing
- Most of the time, there is only a phone number and no email.  When there is an email.

As soon as I see an add like this, I just skip over it.  I've always been careful even when starting out, but you never know, unless you check around these types of review boards.  Unfortunately, one of us does have to take a hit before discovering the rip-offs.