There are so many reasons why sps do not want a review thread that Lena and Luna have already touched on extensively. Not all of it has to do with bad service etc, I myself have requested merb to remove my agency review thread as I am a frequent traveler to the United States and don't work anymore except with regular clients in a sugar type basis
1. From my discussions with other escorts as mentioned some clients are graphic, very picky about body types. Imagine your recovering from an eating disorder in a healthy body weight athletic even and someone has the audacity to call you fat, if you have an eating disorder is this fair and kind? Some spinners I have know have been labeled big I mean c'mon, if your going to be that fussy just buy a realdoll.
2. Some escorts I know have even gotten bad reviews because they refused bbfs, it happens more than you think. I remember every shift I worked at least one client will ask for that service even the married ones, one gave me a bad review as I refused bbfs and I became very upset, raised my voice etc. I reported him to the agency I worked for which banned him and merb. This is not isolated but several escorts I know have been threatened with bad reviews if they don't provide this service, it happens more than you think.
2. Travelling yes, reviews can impact travelling big time, I am a permanent resident of Canada. I always get questioned extensively at the US border when I drive across.I even been pulled aside and had my phone searched, that is traumatic and imagine if your travelling with family members or friends that don't know your other work exists. If they have a hunch, that your "shady"they will try to find this information on you. I think because I worked in another field it helped, I also have a separate phone I use to contact regulars. But the border can find this information about you. If you drive or air travel there are many disclaimers that they will search you, go through your electronics if they have a hunch.
Also, this is not just isolated to escorts. If you frequently visit merb this can result in a 10 year if not more ban from the United States. Case in point I had a regular I seen at an incall when I was working. He travelled alone to the United States/Vermont border but for some reason they banned him as he has a handle on merb, he does not know how they found out this information. Mind you he did not have merb on his smartphone open but they can obtain this information. Your reviewing history can also possibly result in a ban.
3. Of course the others, bad service, not reliable etc
These are just facts I touched on from personal experiences.