Ok, so I posted a question on Friday (look a couple of posts down for reference) and was convinced by a couple of great guys on this board to go ahead and do it and that it was just me being a little too paranoid and that I should go ahead and meet the provider.  I pm'd a few of her most recent reviewers before our scheduled time and they all said she was excellent and said I'd be crazy not to book her.  I did.  Wonderful experience--I'd see her again right NOW if I had the time.
The only problem is today I log in and have a pm from one of those recent reviewers (one that didn't reply on Friday).  He tells me that she's on coke and works for a pimp but he didn't say so in the review because the service was excellent.
The coke thing isn't a major deal with me, I'm not into it but it seems a lot of others are; but the idea of seeing her and supporting her pimp doesn't fly with me.  I'd love to see her again but am a little hesitant now that someone else may be behind the scenes (I'd rather not get involved with that, period).
I'm thinking either (1) this guy is telling the truth or (2) he's just being a jealous jerk and is telling me this so he can have her for himself.  If number 1 is the case, I find it hard to believe because we met at what she said was her home (I noticed photos of her family members inside and the other bedrooms we walked past seemed to occupy someone other than an adult).  If number 2 is the case, then why did he give her such a stellar review and why does she have two pages of GREAT reviews?  I'm still basically brand new to this and need to be as safe and careful as possible.
Has anyone else ever seen anything similar?

I saw a provider once and loved the experience.

I mentioned her to someone else and they warned me about the provider's use of drugs, etc.

I found out later that they were right and it lead to a very dissapointing situation (last minute cancellations and NCNSs.)

So, if you don't feel comfortable seeing her again, I would council that you not see her.  What's the point in paying good money to do something you're not comfortable with?

On the other hand, if you are the adventurous type (And we all have to be somewhat adventurous to embark on this hobby in the first place, right?) then give her another shot.

It's all up to you.

IMHO, Now that you have met her once successfully, you have a good enough idea of her attributes / detrimates to make your own decision.  If I believed that a provider did drugs / was on drugs...  all you'd see is my tail-lights cause I'd be outta there.  I'd not knowingly be in the presence of drugs causing danger to me.

Clients can have falling outs with providers for lots of reasons...   I'd use my own discretion.
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I used to see a lot of girls who had pimps. I never had a problem with any of them. To be honest I never thought much about where the money was going only about my erection and getting it taken care of.  

My concern would be more about how anyone KNOWS the lady has a pimp.  If he is hanging around the in call or waiting in a car outside of your hotel room I wouldn't be too thrilled.  I would not get involved with a girl who was that indiscreet.

There are multiple concerns involved here.  If you feel strongly about not supporting a pimp then stay away. Be aware however that, in 2009, many people use the word pimp rather loosely and without proper regard to it's real meaning.  
Secondly, there is always a safety concern.  Anytime someone besides you and the lady are involved there is increased risk.

1. Girls will not come out and tell you they have a pimp. There are some that are in denial of it and some that will advertise they are independent when in fact they are not.
2. The girl might have had a pimp at one point but now she could be out of that scene and totally independent.
3. You are inevitably going to see girls with pimps (meaning a SO who they see in their civvie life taking the bulk of their money that they make providing) if you are in the hobby long enough. I have seen a few who were rumored to have pimps but never had problems.
4. The money that a girl makes providing does not always go to her, pimp or no pimp. Consider all the expenses a girl has in order to provide (hotels, travel, assistants, agencies, lotions, condoms, toys, lingerie, beverages, web sites, photographers, etc).

Congrats though on your great time. BTW the girls that I saw who were rumored to have pimps were great with the service they provided. I understand the distaste for pimps in general but if they are not in your face and their presence is not known, the better off you are.

and that is the only relevant criteria on which to make your decisions

SO, BF, Husband?  I guess I'd resent a guy living off a lady's income...  but a Fav lady is married, HE also works...  but her income pays the morgage.  I'd not jump to conclusions.
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He either is warning you for your benefit.. or doesn't want people to see her.. Either way why are you wasting this much time on one girl who is still in question.

like your pops always said, Son there is other fish in the sea. Go fishing love!

I've never had the situation you described, happen to me. However, as a newbie, I would recommend you see some other ladies. Don't be in a hurry to repeat with anyone. I know there is a downside to this approach, however, variety is what brings many clients to the hobby. Find out what you really like.  Then if you feel like it, re visit a lady that you really had a great time with. I normally don't pm reviewers, the reviews speak for themselves. I don't need any back stories or rumors etc, like you were pm'd. Good luck and just stick with well reviewed ladies and you should be fine.

Do some girls in this business have pimps, sure they do. But id be wary of hobbyist gossip some of them really, really, really wanna feel like they are "in the know" and some cluck more then the worst sewing circle. a PM from someone who wrote her a good review stating shes on drugs and has a pimp??? what a way to undermine a girls reputation. sounds super fishy to me....

you liked her, you had fun, you wanna see her again... then do it.

It just doesn't make sense to me either.  I plan to see her again sometime...hell with him if he doesn't like her, right?  I didn't feel uncomfortable at all before,during, or after the entire visit, it was afterwards when I got the PM that made me uneasy.

confirm the drug involvement.  Not a good idea to be around drugs in case there is a knock on the door.

Another red flag is she saw you in her home.  Not a good idea because neighbors get curious.

This only my opinion but I have made the mistake when I've knowed better,I will not go into specifics but I have found that when you find a "pimped" provider everything this is "al la carte" by that I mean that every little service is at additional cost and I have been milked by these providers and also they are almost never gfe.These girls are usually quite young and have tell tale "Ownership signs" tattoo's like "daddy's girl" or other brandings on their bodies showing who their a pimp's property...jmho

you're going to have to learn to listen to your instincts and your gut.  As a general rule, if something seems strange, it usually is.  Just don't let your little cranium over ride the common sense you have in your big cranium.  

Of course, if you see her for a follow-up, you could always just ask her...nothing ventured, nothing gained.  Watch her when and if she gives you an answer...then use your instincts.