Does this link not work for you: http://www.youtube.com/account_revert

For me this link appears under the general account settings on youtube:

http://www.youtube.com/account

This is what my account settings page looks like:

http://i.imgur.com/NrEnfyY.png

I changed from my real name to somenamefortestingpurposes, and seem to be able to change this to anything else. I've also tested posting comments with this, and they don't appear with my real name.

I also have the option of deleting my "channel" which I think is pretty much the same as deleting my youtube presence.

Funny. Your first link returns http://www.youtube.com/oops and I don't have these options under general account settings: http://i.imgur.com/yOny4pC.png

What works for Youtube is to create another channel and use that channel and the created page to post comments via pseudonym. I can switch between my original Google Account and the newly created channel. I don't have an option for my primary account through. For this does not matter but if you had personal data in your old Youtube account there is no easy way to hide this information without loosing Google+ as far I understood that problem now.

Interesting, I wonder if this is different in different countries. I'm in the UK, maybe that's the difference? Or potentially the age of the account?

My best guess is this: https://support.google.com/youtube/answer/2657858?hl=en&ref_...

I linked the Channel to my Google+ accounts a few weeks ago.

I'm in the US and your link works fine for me.

NB: I get the same results nisa does.