I host a teamspeak for the Vortex Gaming Community, which is currently unused as the community is very small.
I could be persuaded to allow the use of it for the DiscoveryGC with no problems. If that isn't acceptable the host at "TotalWebHQ" is great. So great infact that my teamspeak server went down (the server it was on had a total and complete crash) and they still managed to get my server back up with all the settings I had before in a very timely manner.
Yeah.. odds are right now only about 50% of the online community would use the server... But that's still around 50 people.
I would be more than willing to donate my real life funds for a community teamspeak server, however that would require in-game compensation either from the admin staffs infinite pockets or player donations.
Through total web HQ, a 50 slot teamspeak server would cost $14/month.. $108 for an entire year up front.