I would absolutely never share any identification documents with a website. If they ask for it, I'm done. YouTube would be especially stupid since I'm pretty sure I made my account in 2007.
Almost every person in the world has had their personal information compromised in data breaches, imagine if they got your driver's license or passport, holy shit.
http://www.youtube.com/watch?v=XiCtAUrZbUk
-- Defeating the Running Man of Ocarina of Time in a race since 01/17/2009. --