Just a little heads up I thought I'd share with some of the groups that dont have healers in them.

For example a full hunter team, full warlock team and others.

Get Herbalism and turn off auto loot. Everyone can skill up off of one herb and then just gather it on main toon. Of course this does take awhile if you dont have a mouse repeater, but well worth it in the leveling game

The 2 minute Regen it gives is pretty nice when you dont have anything else and can be used in combat.. so its nicer than just trying to bandage or gulp potions.