As I just mentioned, I re-established http://www.robseder.com and http://www.robertseder.com – and I put up some social icons of my “internet identity”. I looked for a while to find good-quality, free icons. Most importantly, I wanted them all to have the same look/feel – so I needed a “complete” set. I ended up finding this site:
This has social icons from 32 pixels to 128px, for pretty much every service that exists!