I use google apps for domains, the free version, I like to have my accounts setup with nicknames so I can filter off spam services.
E.g. my primary email is firstname.lastname@example.org
I have the following nicknames
email@example.com facebook firstname.lastname@example.org twitter email@example.com forumx
This means I can tell, if I get a lot of spam to my forumx nickname then obviously that site has sold my details, or is displaying it somewhere, either way, I can setup a filter to block all email to that nickname.
My next question is SSO (e.g. the stackexchange network).
Can I set it up so I can choose what nickname to give to the site?
I know I could set it up with different accounts and forward the emails, but I would rather use nicknames and just have one username/password!