Dancing Bear is an unofficial Bangbros owned site/company (to preserve the "amateur" look) look at the update the start by dbXXXXX like bangbros updates.
I guess the models who appears on these videos are the ones who have cvs at Bangbros so if she performs well on that party they'll give her own movie a kind like casting.
So they are hookers or need for job people (Shame) or sluts that needs to get fucked.