There's a little debate regarding pre-made groups entering Alterac Valley (AV) in Blizzard's World of Warcraft by using voice chat or other methods to make sure each player presses the queue button at the same time. According to blue poster Tyren on WoW's official forums, however, setting up pre-made teams in AV is not an exploit unlike how some would put it.

It's no secret that some groups coordinate using voice chat to fight together in Alterac Valley, and doing so can leave the opposing team at a disadvantage. Tyren said, "It's definitely not an exploit to enter the queue at the same time using Voice Chat or another communication method," and many players who posted on the forum thread aren't particularly unhappy about the pre-made teams. Looks like coordinated teams are good to go.