How is your resisting to Google asking to merge Google account with youtube?
I am bringing it on.!
http://kwerty.com/YouTube-User-Guard/
It lets you use an entirely separate Google account souly for YouTube. You sign in to YouTube once, click a button that says 'Stay signed in with this account' and then you remain signed in to Youtube with that accout forever, even while you sign in and out of other google accounts for other services. Only downside is that it's for Chrome only.