Sorry ingnorant question here...

[Skrimshaw]

What does the "help" do in your targeting macros. I see a lot of ppl going with exists, help, nodead I am currently running exists, nodead Was just curious what help does. Thank you.

[Dawnstone]

the [help] tag checks to see if the target is friendly (NPC and Players). Ifs its a mob thats red, it'll return negative. The reverse is true for the [nohelp] tag.

So something like this could be put in the same macro
/cast [help] Renew(); Smite()
Will regen a friendly target, otherwise it'll cast a nuke on a harmful target.

[Skrimshaw]

ahh tyvm.

[Ughmahedhurtz]

If you haven't seen it yet, I highly recommend you do a quick scan through the WoWWiki on macros . It'll definitely edumacate you and might give you a few ideas, even.