As a resto shaman, I'm usually taking care of topping off raid damage during fights, and I try to be as proactive as possible. Unfortunately, raid damage usually requires a more reactive touch, on average. For example, the trash sentinel's (in Sunwell) chain lightning... when someone in raid gets hit by this, I immediately find the person with the greatest health deficit in raid (usually a lock or SP (lifetap and SW

)) and bounce a chain heal off of them to top off the raid. Based upon all indicators after installing this addon, my overheal was > 80%. This led me to believe, intuitively, that my healing was mostly ineffective, even though the combatlog (WWS) proved differently. I'm going to have to ignore recount and SCT unless they make the same changes as this addon does, and heal 'blind', as it were.
On the other hand, I don't really care what the numbers say. The success of a raid is more important to me than topping meters, and if I can accept that the healing I'm doing is actually effective, regardless of reported heals, then I should be fine. Instantaneous reporting of a person's health is by far the more important.
Mod is highly recommended, and good job to the author.