It’s been a while since I looked at get satisfaction and user voice. Both are now focused at selling to the supplier and it would seem that one can no longer take a single whinger view. (Or at least with getsatisfaction, the “my favourites page” is broken so I don’t know, but with user voice, you are left to keep your own records; this may have always been the case.)
My getsatisfaction engagement is a while ago and the services that used it seem to have all gone, plazes, ovi, tweetpros & living Social.) getsatisfaction has common forums platform see here…. Wonder what happens if you don’t want the conversations public.
With user voice, I found Tom Watson’s Digital Pledges, Docivo use it but I seem to have forgotten the others and google doesn’t help, possibly because they are are not a single domain, however, they do have a single identity domain.