If it's observed that you only greet the Dominants in a room, you may soon find yourself developing the reputation as a bit of a troll.
Did you know, the Asj Community hosts ‘Lifestyle Classes and Discussions’ here online every Sunday evening at pm Eastern Time.
A submissive or slave may not like a Dominant she comes across while she's chatting, but that is still no reason not to be courteous and respectful.
And yes, it goes without saying, as a submissive or slave you are also due appropriate respect from anyone else you come across, including Dominants.
Once inside of a dominant submissive chat room, the keywords to remember are "respect" and "courtesy".
If you show respect and courtesy, you'll soon find you get respect and courtesy in return.
Other chat rooms such as those found here on the Asj's web site will welcome you with open arms as you enter the chat room.
Unless you've been to a Dominant submissive chat room before, or someone has recommended you to the room and told you of the policy there, it's almost impossible to know in advance and you'll have to play it by ear.
Most of them are submissive and have thought a great deal about thier sexual choices, and about placing an ad online.
Because they are submissive and serious, they are usually looking for a guy (and sometimes girl) who will be the dominant one and help them live out thier fantasy.