Steve Rubel has a neat approach to track his online presence (be it messages, posts, social network upkeep, etc.) straight from his Gmail account:
Thanks to gobs of storage, a pretty strong reason to stay locked-in (three and a half years of heavy email use), my Gmail account is the nerve center that runs my life. Yes, just as Gmail remains my personal nerve center, it now also tracks my social graph. I use Gmail as a Grand Central Station-sized hub that helps me track every social network I participate in and my friends’ activity there – as well as my own.
Yet another approach to make Google the master puppet (or you of it) for all your online interactions.