YouTube – How to Create Two Channels Under One Account

The closest thing I can think of is a greasemonkey script to hide the video when username is equal to whatever expression you want, however the page would have been loaded so technically the uploader would stick get a click through link.

In my case, I must click on "Switch account" first. Then I get option to add account. You can see how to do it on youtube: http://www.youtube.com/watch?v=b5qOSRzFzU8