I have occasionally received messages over the past few months asking about how to get on Rooster Speak's Teamspeak server, specifically requesting the password. I'm not sure if the requests are originating from people browsing this group, but if they are then here's what I have to say. My short answer: I don't know.
Longer Answer: I've been away from Rooster Speak for a few years by this point so I'm sure the password has changed by now. Even if it hasn't, I don't remember what the password was to begin with. Lastly, I honestly don't feel comfortable asking any admins over there (half of whom probably don't know/remember me) for the password for someone I don't even know.
I don't know how strict or lax they are with letting new people on the server, but if it's something you're interested in I'd recommend going straight to the source and contacting an admin on the group (most of them have twitter).