Chill is a free video platform that requires a sign up. Just head over to its main page and open your free account there. Once logged in you can then start organizing your videos the way you want. You can even add videos with your comments to different categories. You can create as many categories as you want and via appropriately tagging your videos. they will appear just like a sticky note on a wall. The look reminds me of Wall Wisher the other tool that helps you organize your notes on a wall.
Chill supports videos from a wide range of popular video hosting platforms including Youtube, Vimeo, Vevo, and Hulu.
Head over to Chill and give it a try.