So you want to meet a Domme, huh?
Well, having got that little, (but important) point out of the way, let's carry on, shall we. The following are a list of things that you might want to bear in mind.
There are lots of male submissives.
You are not the only male submissive in the world. In fact, within the BDSM scene you're just about the lowest of the low. Sorry if that sounds depressing, but it's the truth, and you might as well hear it from me in a polite form, instead of from someone else in a chatroom who is rather less than polite. Simply coming into a chat room and telling people that you're a male submissive isn't going to mean a thing. Quite frankly, we don't care. Worse still is telling people that you're a male submissive, and which lucky mistress would like you as their slave. They will NOT be interested. Most likely they already have a submissive, and they're probably not looking for another one. So, to really hammer the point home: THIS APPROACH WILL NOT WORK!