At the end of the day, there may be many reasons for this...it may just be a decision based on preference or even past experience.

Still not a doctor....

I don't want to make any assumptions about other ladies, but I find policies like that to be a little offensive.  

It is depressing.

I think there is a similar trend of ageism. It is common for girls to seek/only see "mature/older" gentlemen. As a younger guy (well, 35 is younger in this biz as far as I can tell), I've never been asked my age before or during, except casually when it wouldn't matter. I don't know if the racists check either. Not that it matters.

I had an encounter with a black provider a few months ago. It was late, the experience wasn't anything special, but I was dismayed when during the after-chat she went off about the biz. Here is what I remember her complaining about:

Young black men, because she said they are "pushers" and are always trying to get more from her.
White girl providers because they are freaky and do "dirty" things, and ruin it for everyone else.
Asian providers because they are the "dirtiest". and ruin it for everyone else.
All providers who charge less than her, thus dictating what her rates have to be and ruining it for her. "We should all just set the rates, and nobody can go lower". Fascist. Hag.
Everyone in Ohio, because they were all jerks.
Then she said she was gonna get high.

I still laugh at it all, although I think it is sad.  

What else can you do?  You cannot force reason upon them in their hearts. We live in a country where homosexuals can't get married. Where women are still paid less than men for the same work. I am a hetero white male, and although I've experienced racist/sexism/ageism and other prejudices in life, it has never really affected my sense of self. I know a lesbian who has described horrible treatment at such random places as hardware stores and jewelry shops. I don't get it. I have hope for humanity, but at the same time, feel disconnected from it.  

So yeah, I agree with you.

I see this on more than just BP unfortunately. My thing is as long as I can understand you, and you are respectful, have references, I have no problem seeing you no matter what color you are. It might be past experiences I am not sure, but I can't fathom that it's any good for their business in the long run.

I'd hate to have the provider disappointed at how incredibly small my unit is if she's used to massive black cocks all the time.

In fact, what I'd love to see is a provider who says "catering to diabetic asian gentlemen only" and I would ask her to make an exception.

No and yes ........

We advertise publicly but aren't we private business? And gah I do need to look this up later but aren't private business allowed to discriminate who they serve or hire?  
Things were still PRETTY RACIST about 40-50 something years ago.... barely even been 2 generations really so with that being said I am and am NOT put off or surprised by some having a NBA policy (HOWEVER I do know every lady with that policy is not racist).  
I get and respect you can't bring yourself to see someone who explicitly puts No AA/Black Men or advertises it implicitly like ("I only see Caucasian gentleman ages 35+" or "I prefer the company of Caucasian gentlemen 35+") but keep in mind not all of their reasons for it are the same.  
I see many ISO's that state no bbw's or not into bbw's but doesn't bother me (can't equally put weight and black on the same pedestal however I'm making the point not everyone discriminates on certain things for malicious reasons....sometimes it's simply & purely just preference).  

And i'll end it with i'm very an much EOP (equal opportunity provider).

....(regardless of his race...including white men). That's a new thing i've been seeing (more than a few times now) where ladies have stated on their profiles/sites/ads that they wouldn't see any clients who have seen (reviewed or use as references or have been given okays/recommends) AA or Black providers. Now THAT I find even more off-putting but of course that's also preference of theirs isn't it? *shrugs*

Just because,

she has the right to say who may enter her body, does not make her racist.
I'm white and have seen black women and I know some guys would not.
Does that make them racist, I think not, it's called preference

I have never thought that a provider having a preference with regard to age,race, or any other factor is out of line at all. I myself have preferences for body type, age,etc and certainly all hobbyists do as well. If a person has a preference for people their own age or race then that does not make them evil. What would be racist is if a provider did not put out there that she prefered one race over another but did in fact prefer one over the other and took the donation from both but gave one better service than the other.

Why would a hobbyist want to see someone who was not into them, for whatever reason.

As far as comparing this type of profession to others, well that is ludacris, most professions/jobs do not require such an intimate connection being made, physical anyway, with the customer. It is one thing to work at McDonald's and not want to serve a particular race of people, it is another to be asked to be sexual with a person of a certain race or age that you are just not comfortable with.

I would imagine these girls with preferences get enough abuse from people who are "x" ed out so they I am sure have a sincere preference. Surely people would think it proper to afford providers the freedom to select who they want to be with based on their comfort level without bashing that person. One could say a provider was prejudice against those with a criminal history if they chose not to see someone a background check showed was a criminal, it would be impossible to be comfortable in that setting and I would not fault the lady for not seeing that person.

Now I will say that ads with "no black men" do actually put up a red flag for me, I do usually avoid seeing providers, or advertisers lets say, who put that on there unless they have good reviews. Reason being, I believe many of the scammers,cash and dashers,etc, have a perception that black men are more likely to just accept being ripped off than whites,asians,etc, so they don't want any of those people showing up as their potential victims. I would say that perception would be to a large extent prejudicial as anyone can attempt to get physical,etc in an attempt to fight off getting robbed or get the money back from a rip off artist. Have the particular rip off artists experianced more trouble with blacks than other races, well only they could tell you that for sure. If blacks do indeed on the average put up more of a argument with the ripoff people then more power to them.

I quite honestly think the orgy of sorts that this country has had with regard to accusations of racism is beyond tiresome as it is, many times it is just used as a crutch and/or as an excuse. It is really out of sorts for this hobby for it even to be brought up ey???

It has little to do with the color of the clients skin. It is profiling the tendency of having to deal with bullsh*t.  Girls looking to avoid negotiating and being shortchanged, and no-shows, and being treated poorly in general have thrown a blanket over an entire race because from their personal experience, that's who's doing it to them.  It ends up excluding good people as well, but such is life.

...as I have been told many times, black guys (more often tha other races) tend to be insulting and sometimes do not pay the bill.  

Man up if your black and do your race right