just like this site .. the providers sites are password / member only sites ... otherwise would defeat the purpose if guys could make changes.  

I had met up with a girl some time ago who also let me know about something similar.  When I first contacted her, she gave me a general location,  then when I gave the "call when I was close", no answer.  I never DCDS ever so I tried a few times then went home and called from my house, got the ok.  This happened 3x when I finally just called to tell her it's OK if she didn't want my business but I just wanted her to know I didn't just flake on her. She then told me to come back, and that's when she told me my number had a "red flag". I had been out of the hobby for close to 5 years, and it was from recent date. I never knew what it said and there was no way it could have been me. I have never flaked, stiffed, or broken any rules or boundaries with anyone. I have even stayed for b&s when I was not interested but felt bad . So this still concerns me. She said she would post a positive review for me but I have no way of knowing.  Now I have trusted references so I hope that would be enough.  But I'd like to find out what it said.

I don’t know about a review site like this. But they post text messages from bad clients on Reddit.

I'm not sure one way or the other whether there are such sites.  However, I think that there are more private chat groups in which providers exchange information.  For example, I am currently intimate with a Chinese provider who uses WeChat.  Users of WeChat know that you can have "Group Chats."  I know for a fact that my friend is a member of various groups that are "provider only" and within those group chats, the gals share info on openings at various agencies and other info, including info on "bad clients" with phone numbers and sometimes jpegs of ID.  Since the group chats are essentially closed peer-to-peer networks, it may be impossible to find out if you are a "red flag" client.