This addon is discontinued and will not be upgraded to WotLK.
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Buffer is a collection of five independent, small windows that show information for buffing. Buffer does not automate buffing, it helps you find the players who need to be buffed. The windows show:
Target buffs: all castable buffs on your cureent target
Nearby buffs: players in range who need to be buffed
Special buffs: your buffs on players you have chosen to watch
Notepad: your notes on which buffs to put on which classes or players
Health panel: stripped down unit display for healers
Nearby Buffs can be clicked to target the player - useful in groups when you need to buff and rebuff. Notepad and Special Buffs are useful in raid groups.
When used with the Health panel, Target Buffs helps you rebuff "on the fly" as you are healing.