Dear dlee8275,
Your questions are very interesting, however, I believe it would be somewhat irresponsible to provide patent answers, simply because there are no reliable or verifiable statistics supporting any conclusions in the matter. Hence:
1. Your question about "anything else unsavory" is clearly in the eye of the beholder. I would venture to say that the majority of Korean AMPs are NOT involved in human trafficking or organized crime. Having said that, however, there are all sorts of businesses that serve as fronts for criminal activities - but would it be smart to operate a massage parlor as a front for anything illegal? As it is, AMPs are controversial in the minds of the general population; thus, you wouldn't want criminal elements involved with something that already is skirting legality. This doesn't mean that all AMPs are run according to the law, or that there is NEVER any coercion involved. We're talking sex work here and when women are not working 100% independently, it's hard to say if their bosses - be they madams or pimps - are always fair to their employees.
Now, I have made the statement that very upscale madams such as Heidi Fleiss, Sydney Biddle Barrows and even Alex Adams treated their employees with kid gloves, but then we're talking about women who commanded thousands of dollars per encounter and therefore were extremely valuable to their employers. In AMPs, there can be a fairly rapid turnover, and it doesn't matter if it's sex or hamburgers you're selling - if the product is cheap, the workers are usually expendable and enjoy less security and benefits on the job.
Your guilt is a matter between you and your conscience. However, your rationale for what's safe and what isn't is very interesting. Please remember that it's not just the aspect of protection but that statistically, the higher the partner frequency, the higher the risk of something going awry. So rather than meeting with a low volume provider who is very safety conscious, who has the money to frequent top gynecologists and who has access to the best that health care can offer, you'd rather go to a place where zillions of guys have gone before you and done all sorts of things that maybe the AMP ladies cannot and will not explain to you. Remember that you will NEVER KNOW where these women have been or what they've done. They also have a private life and they could be screwing their brains out uncovered with full-on meth users...and you wouldn't know a thing about it. People don't just have sex on the job - they have it off the clock too, with whomever they please.
I'm not a guy, but nevertheless I do have a professional perspective of the sex industry. And it strikes me that you could have a less guilt-inducing and perhaps even safer experience if you frequented someone who is low volume, who offers GFE, but who wouldn't exercise her GFE skills on you and also keep everything covered. A pity to waste all that sensual kissing talent, but at least you could have a meaningful conversation with her and obtain some answers to your questions. And be in a nicer environment, doorman, lovely apartment (if in NYC), no rush, some intimacy, etc. And know that you're not part of some scheme to rake in money for other people, but that the provider gets the full benefit of your patronage. Bottom line, though: if you're highly risk-averse, hobbying may not be for you.
Hope that helps,
the Love Goddess