From WoWWiki

I'm a longtime WoWWiki reader, but I've recently joined and I'd like to create some Arena related articles that would be useful to many PvPers. I'd like to begin by creating articles on various compositions, and strengths and weaknesses of them, such as:

3v3

Shadow Play, Double Melee, RMP (Rogue Mage Priest, sometimes PMR)

5v5

2345, 2346, Cleave (Arena), Eurocomp