http://www.safe4all.orgStop Abuse For Everyone - Stop Abuse For Everyone is a non-profit that provides services that fill in the gaps in domestic violence services. We provide services for battered men, gay and lesbian victims, and deal with issues such as sibling violence and elder abuse.
The site is fairly rudimentary, but I was amazed at how much I was able to accomplish with OpenACS. I'm very impressed with the system -- it is such a leap above ACS.
My biggest criticism is with how permissions are handled. It seems like there are too many different types of permissions, for no special reason. I'm not sure if that's being addressed in 4.6 or 4.7.
Anyway, I finally have an OpenACS site up, so expect some more participation from me in the future. :)