This might be a security problem ...
A few days ago I opened grooveshark and suddenly was logged into an account which I did not know. It was definitely not opened in my browser before. I just signed out and thought "strange, but who cares."
Well, today this probably happened to someone else who got into my account, because I saw scrobbles on last.fm coming from my GS account ...
I now remove all connections of my GS account to Google, last.fm and twitter to be sure.
All this should not happen, right?
Would love to get some response from your security team!