The majority of the ladies I see seem to be on target as far as their reviews go, except one which was a nightmare. But remember the term YMMV. The ladies try to accommodate but if there's a bad vibe then all bets are off.

There are a variety of opinions about how often a hobbiest's expectations are met...see link to thread from a couple of weeks ago

I had more disappointment with reviewed ladies than with those that are either newbies or have a no reviews policy...Reviews are just a very subjective indication of what to expect.

I only see girls with at least 5 or 6 reviews and I take
note of the reviewers. There  are enough veteran hobbyists
whose reviews you can pretty much depend on. Eliminate
the highest score and the lowest score and look at the  
consistency of the remaining scores.  Even with
YMMV it can't vary that much to make a 9/9 turn into a 6/6.
I even contact some of the reviewers to get a better idea
than the review will even give me and that helps a lot.
I'm rarely disappointed and I've been doing this for a while.

I recently saw a guy who insist no kissing, he feels less guilty since he is married. Hard to be a GFE when there is no kissing, but it's his hour....so I did what he say. I don't know any amazing GFE provider who doesn't kiss. Isn't that an oxymoron?

considering there is no FTC oversight and an anonymous author.  

  My recommendation is to READ a minimum of a dozen or so reviews. Quantify that services listed as a "Yes" are mentioned in at least two of the reviews you read. If she has a 10 - 10 and a 7 - 7 on the same page read between the lines. Take a look at the depth of some of her reviewer's review histories as well as their particular tastes in regards to the other ladies they've reviewed.