I have to say I'm a little skeptical of these rumors because of this. Most of the things you mentioned: double-teaming, gang-bangs, spit-roasts, bukkake, would involve Pixy and at least one other guy.
Now, she may get laid, but I get the idea that Pixy is the type of girl that, if you were so desperate/horny/lonely/bored that you bought a ticket to Pixy-town, you'd want to slam it out with her real quick and you wouldn't want any of your friends to know about it.
I don't know where these rumors come from, but in my mind, if you say she's into bukkake, that means that somebody stood in a circle with a bunch of other men and beat off to...Pixy?
Yeah, they were so horny that they and another man used...Pixy..as a vessel...?
They and another group of guys were so hot, they all got together and banged...Pixy?
And then told the internet? It just doesn't add up.
I'm not trying to white-knight her by any means, but I don't get why any man would admit to fucking her, period. Let alone, "Oh yeah, me and six other guys jerked off to each other....I mean her...I mean...um...isn't she such a slut lol?"
I'm not denying her attention-whoreosity, but seriously people, would you even let your penis near Pixy, let alone with another man there? Who the fuck would be so desperate they'd all gather 'round a woman like Pixy? I call shenanigans.