Discuss what you will think the most popular servers will be for pvp come cata. From what i've seen it seems
Central Horde-Illidan
Central Alliance-Sargeras
Pacific Horde-Blackrock
Pacific Alliance-Tich
Eastern Horde-Mal'ganis
Eastern Alliance-?

Personally I'm looking for a new horde realm for cata but it seems any good pvp realm for horde means that horde is outnumbering the alliance by a huge amount leading to long queues