Probably shouldn't ruin your DPS to gimp-heal unless the healer runs out of mana or disconnects or something. Don't bother healing.
I completely disagree with this. What good will your slightly higher DPS do you when your tank is dead and you are getting smacked in the face and all your spells are getting interrupted?
Keep your tank alive at all costs, or your DPS will suffer worse than tossing a few heals.
Edit: punctuation! Edited, Oct 18th 2013 12:46pm by Canadensis