Emailing A Link To Youtube

[Barquentine]

I emailed a link to a Youtube video to a friend. I copied it to my work account. Trouble is - when I click the link it takes me into my Youtube account.
Does this mean my friend had access to my Youtube account now via the link I sent him?

[Buenchico]

No. There are cookies on your computer that were created when you logged into your Youtube account. Youtube recognises those when you visit their site, so you're automatically logged in. Those cookies don't exist on your friend's computer, so he can't access your account.

[Barquentine]

Phew - thanks Buenchico - that's a relief. I imagined he could post comments/ add videos from within my account!