My experience with doing reviews here, is that if it has anything negative, it will not be posted.  Which that doesn't make sense.  All companies should want to alert folks to potential problems!  And it would be some positive incentive to the ladies to do a good job!  
 I would like it, if all the ladies I ever met were good, but a lot of them were not!  Did a negative review actually get posted?  The worst I knew were from Arab countries. Just look for the tell-tale snake writing.  Though they were not the only bad ones.  I even met a bad one in Brazil, Argentina & Spain, 3 hot spots.  And they were not so bad, but some were sure disappointing in Bangkok.  

About paying after, the ladies would sure not want to gamble on the person not having money or running away!  It would be like a car dealer letting you drive off with the car, without paying anything.  I wouldn't want to sell something, without the person paying.  And about the lady, she would treat you a lot better, if you pay before starting!  Maybe throw in a rose  

And 1 last thing, I was not able to do a review here about the best lady.  That was because she did not have a web-page or a telephone number and maybe something else.  Her name was Carla from Panama.  
If things are now positive about being able to do negative reviews, I may do more reviews.  But not because I enjoy doing a bad review!