Props. I did a very similar thing.

For me, google docs was the hook that made me create another account. Every volunteer project I go near uses them.

I tried creating aliases for the projects so that each product team could reference me by an email address that reflected the project. But after a year or two I had loads of these aliases and would accidentally open a doc for one project whilst logged in to gdocs as the identity for another project.

I now just have one identity for google. And I feel dirty.