This post is a really good answer for every player that is concerned about "Premades", "PuG-stompers" (two different things) and communication.
For the cost of a free download and a couple minutes of set-up you can have instant voice communication with your entire team. I have used this server a fair amount in the past week or so and I would like to give a big thanks to CalltheVoid for opening it up to everyone.
You do not need a mic to listen to the team chatter (only if you want to add).
Note - this is NOT a PuG-Stomp-InstaKiller. If there is a team out there that is only interested in fighting newb/intermediate players Ventrillo will not help a great deal. Communication is very important but experience goes a long, long way.
However this CAN be a PuG-Stomp-SlowDeath for those that take advantge of it. If you get into the habit of communicating and continue to watch/learn/play you will build up your own community of PuG's 2.0.
The game would be great if voice chat were built in. It's not. This is a very good alternative. I am still amazed that more people have not taken advantage of this opportunity.
Here is a post from pacov that has some Vent information and specific server information:
Hope to hear more people in-game!