You should check out the tankspot videos. Lots of great information in there.
For our kills, we have range stand in range of green to nuke ASAP, and in range of orange to nuke ASAP. When either slime chooses a target, all dps pile on it. We use invis/vanish when he's entering a new phase so mages and rogues get some extra dps time in during the phase transitions. For phase 3, tank initially stands at the entrance and we blow bloodlust and CDs and dps HARD while he walks over there. Then just normal kiting and avoiding death ensues. We use a 2/2/2 > 3/3/3 > 4/4/4 > 5/5/5 taunt rotation (with the number being the number of stacks of that debuff) to maximize the time of low aoe pulse damage.
Sadly, Blood Queen despawned on our 25 group last week due to a soft-reset bug.
What some of the lamer guilds on our realm have been doing is just skipping Putricide and Blood Queen completely until they get the ICC raid buff. Bunch of fucking faggots they are. Then they can lolwut their way into catching up on raid content!