Ugh. It was only a matter of time before you ran across these guys. They go by many names (none of which are flattering), but I will hereafter refer to them with the SFW term "fanboy".
Sometimes fanboys are roomhelpers, sometimes they are just guys that are regulars. But they are always obnoxious, regardless of whether or not they have the ability to boot/silence or change room topics.
They advertise the model's photosets, videos, privates...anything that might potentially bring her revenue. Depending on how close they've gotten to the model, they may also have a dialogue going on behind the scenes with her as they alert her to the presence of a good tipper that just wandered in unnoticed; or, on a site that is notorious for chargebacks, they may be warning her the guy trying to chat her up just created his account today; or, they may be explaining that "I could eat dinner off that ass" is a way some Americans compliment; or, they may just be sitting there glued to the monitor because she told them it was close to her time of the month and asked them to keep an eye out for any signs of blood.
They can occasionally be of use to the model (especially for models who are trying to work multiple sites), but more often they are simply a distraction, and a complete nuisance to anyone they come into contact with. They don't just advertise for the model, but they also plead for guys to tip her, and even worse, they can often be heard thanking tippers on her behalf (which may be their most annoying f*cking trait). The world would be a far better place if they were all rounded up and sent into exile; I think the Siberian wilderness would be an ideal location for them.
Why do they do this, you wonder? Well, they are sort of like zombies; but whereas a zombie is only interested in devouring brains or the flesh of the living, the fanboy is only interested in seeing a model clap, giggle, laugh, gloat and glow after a really good show has wrapped up. Again, ugh...
*source: I'm a fanboy