I tried out Six Degrees a while ago and was dissapointed. Now I understand why. Sixdegrees "provides one click access to everything on your computer". Because it organizes things by Project, People and Emails, I wanted to use it to keep track of the people I got to know through these weak links we call email and weblogs. It's not very good at that, so I was dissapointed. I have no problems organizing my stuff on my computer and finding files, so SixDegrees didn't do much for me.
So now I'm waiting for someone to do a good desktop app to organize the people I know. I don't particularly want social software (as it's being defined). I don't care too much about who knows who, I just want some app to help me understand who I know. Probably won't happen.