Pretty good not just for making a channel list for kids but also for productvity, if you want to use only for learning than time killing.
Although there are two problems.
1. The video can still be played if the page is refreshed.
2. The codes of channels and password you've put into the options will dissapear once you've hit save.

Hi your extension is awesome. The only thing that could be better would be to have the possibility to block by key word.