This isn't related to advertising, but in a way I guess it is.
I know sometimes when rooms get popular they get clogged. On Stickam there is an option to dock/undock cams you want/don't, seeing as there are a finite number of cam slots. It'd probably be hard to differentiate between people that are burping and those that aren't, unless their screen names explicitly stated it in one way or another. For instance, say some awesome belchers came in the room, and the cam slots are all taken by people in the room just goofing around. You could ask all belchers to "audition" in a sense. The room creator would undock a cam slot and put the one auditioning in the empty slot. Just tell them showing you that they can burp is a prerequisite for being a mod for the above mentioned reasons. Once this is done, mod them. All mods are green in color. Then everybody in the room will know they are there to burp, or at least can, and can dock/undock accordingly.
I think this would also help with any type of power struggle. Sometimes we play favorites and mod only those that come in most. If all belchers in the room are modded, then power is equally distributed, therefore disallowing any kicks(etc) that may happen from a spiteful mod to another fellow belcher who is not modded. Of course we keep modding people like myself, Rina, etc, because we know they can belch and/or they have earned it in some other way. But giving any other belcher equal rights guarantees less strife, at least in that context.
I think this would also increase the number of people wanting to belch. If the process of becoming a mod includes being among the chosen few that can belch, it creates a good incentive to belch. Those that are modded always have the power to deal with annoying people that aren't there for the specific purpose, or that are harassing them. Of course you may run into problems with specific people being mods(undue kicking, etc), but that can be dealt with accordingly, and I think by and large most that would earn mod in this way deserve to be by being there for the correct purpose.
BTW, I think guys should be included in this modding process. It's only fair. You can always discuss within the room itself who is a guy and who isn't. You can mute and undock at will. I really think the benefits of having more people in there outweigh the dislike of male belching. If the only argument you have for not including guys is because "you don't like it" or similar line, I don't think it's a good enough argument. It's just a personal preference. People really shouldn't be in there for the purpose of masturbation anyway. If you want to do that, you can do it elsewhere. *casts eyes of suspicion*
I know it's heavily in favor of guys liking girls here, but there are people here that like guys burping too dammit! Can I get an amen?