YouTube Account is Cancelled

I received an email notification from Youtube today. It says that I need to update my account. When I clicked the link to update it, it says that I need to link it to my Google account. Since I am using a yahoo email address to sign-in in Youtube, starting December 13, 2011, it will no longer be valid.

This is the message that appeared on my screen as I was trying to update my account.

"Link your YouTube and Google Accounts
You will no longer be able to sign in to YouTube without a Google Account.
If you do not want to link this YouTube account, you can sign out here."

It is fine if I can no longer sign-in with my yahoo email address. I will use very soon my existing google account in Youtube. Cheers!