Paulc3000,
I don't think the amateurs with normal lives will tell their boyfriends tor husbands that they banged or gave bjs to strippers while being filmed, unless of course they are very open about sharing info of their sexual past with their current partners. I think not many husbands or boyfriends will be happy if they found out their partner had some form of sexual activity with a male stripper and it was filmed and available online (in some form). This could cause a breakups or divorces, especially if their buddies make fun of them ( "man, I saw your wife/girlfriend bang a stripper, I didn't know she was such a sl*t can't believe you ending with such a woman") no guy wants to hear that.
I think you are right about some amateurs being local escorts. Like low level escorts who only do it for 1 year or less, to earn some cash to make ends meet. PH offers them a reversal of roles, for once they are the customers and have the option of being "served". They might be thinking along the lines of "hey, I am an escort who has sex for money, blowing and banging a stripper is not much different, plus I Doubt anyone I know will find out".
Shlj is right, PH is blocked in Czech, I bet PH gets girls to come to their parties by also, telling them that footage of the party will not be available on the local internet. PH was in the Czech News a few years back because I think the president or prime minister's daughther was there in one of the parties, watching people have sex/ oral sex around. I think this was some kind of scandal in Czech news.
So we can assume that party hardcore' existence is know inside Czech Republic due to that scandal.
Lastly, you are right, I don't think many amateurs research online to see if x rated footage of them is online.
Quick side note - That girl from 2003 who was getting banged on that inflatable pool bed, must have been in her early twenties, lets assume he was 23 years old. He would be around 37 or 38 years old now, probably married with kids, maybe even doing a professional job is some office. You bet she never wants this footage of her giving into lust and having sex with a male stripper ever to be know to any family or friends around her. The lesson here is that Sexual arousal is powerful enough to overrule logic and common sense. No one wants such an unplanned moment to be caught on tape.