Everything is staged... just like the rest of the 'reality porn'.

I've worked with some 'web girls' in the past (filmed/distributed) and can tell you that everyone brings in a test before the shoot but the guys are definitely not paid. Strangely enough their fans think its payment enough to get to nail their 'fantasy slut' for free.

Knowing how nutty these chicks can get, I wouldn't doubt that she actually did a breeding party though.