Damnation is an addon to automaticly remove (Greater) Blessing of Salvation from tanks.
It's been on the SVN for a while but it never had a forum thread. I just rewrote it, so thought I'd give it a forum thread as well. It no longer uses the recource-hog SpecialEvents-Aura and is overall more efficient than ever.
Yes, it's very similar. The difference is that Damnation is automatic and don't have to be toggled like FreeMe. For example a feral druid can dps in cat form with Salvation and if the main tank goes down he can swap to bear and take over. Salvation will drop automaticly as he switch to bearform.