Google Accounts and Google Dashboard help you keep track of your gaggle of Google accounts.
Google Accounts lists all accounts and services that you use on Google. Google Dashboard lists accounts where they store data. You may be surprised at how many you have. I have 24.
And while you’re at it, set up a Google Profile too ( if you haven’t already.) It’s a good way for people to find you. Tech blogger Robert Scoble says he got a White House invite from his Google Profile because he had his email address accessible. Here’s mine.