post their ads on the appropriate boards according to TER rules...  and participate in discussions on other boards.  I think board participation can help understand a lady's legitimacy...  and encorage more daring clients to TOFTT.   Soon a review happens & everything is right in the world...

but it is a big help in selecting providers who generally offer what a client is looking for.  Also devolupes a higher level of confidence going in.  But the coupling of 2 unique individuals will and always should be unique...  in fact many times, repeat visits have a flavor all their own, even while they may share some commonality.   The only way to know going in is to already have been through the door yourself...  and even then things change.

A well reviewed provider is the best we've got.
 
Incidentally, Providers should freak over an occasional off review...  I read them carefully but will not be put off by an occasional dose of bad chemistry.  Sometimes, reviewers are can be seen as hard scorers or admit to having booked someone who he "knew was not his type" what ever that may be... right in the review!  
If I see reviews that are like a YoYo, up & down...  something is wrong.  Either she does not relate well to guys who are not her type (and face it, I'm no super stud anymore) or she's moody.  Either one is a turn off for me.  I don't need to see all 9s or 10s...  actually it's the description behind these arbitrary numbers that count...  but I ought to find her attractive (7) and I ought to have a hot time (7).  Frankly, I'll take a consistant run of 7s or 8s anyday...  
H  

Consider this...some of us ladies...

...don't troll for reviews and prefer discretion. Some of us are up to very naughty things that men don't confess (and don't forget the chest bump and high fives here). I'd been around years before I was reviewed, and was almost mortified when it finally happened. Something odd about reading a chronicle and rating...made me feel validated but exposed in too graphic detail. I'm already very open online, stories, pictures, videos...   BDSM and fetish are accustomed to limited reviews and most don't want their naughtiest details dished.    I ask my peeps to keep intimacies intimate, because I probably wouldn't have wanted the VIP highlights shared. Although, its probably brought me fun friends.

So...you have to look at the whole picture, reviews and...look at all her content online. Then, use your common sense.