My 3 toons hit 40 today, i have been using a healing macro that i find effective, but there is always room for improvement. If anyone has some suggestions about what I could change or would like to post a macro they wrote for healing multiple toons please do so! Seeing as how i use 2 warlocks(one is the leader) and 1 shadow priest, plus pets to heal i have variations of the following macro keybound for my priest the variation is that each macro has a different pet or charaters name after the /target
Example of the macro tied to the "Z" key:
/target Konnar
/cast [modifier:ctrl] Power Word: Shield(); [modifier:alt] Renew(); [modifier:shift] Heal()

If you hold ctrl and push Z then konnar gets a bubble, alt renews, shift heals. Then i have the same macro with the priests name, and the other locks and pets being the /target all bound to different keys. Hope someone finds this useful, it would be even better if anyone would like to post what they do.