Google Product Forums
Re: Google+ and username wont work!
The Lady From Uncle Mar 20, 2012 2:12 PM
Posted in group: YouTube

Categories: YouTube for Non-Profits :

Have you read up on  http://support.google.com/youtube/bin/static.py?hl=en&topic=2521661&guide=2476124&page=guide.cs ?

The whole thing is quite tricky and very new so do read it carefully.  ;)