Web 2.0 review

My favorite program on Web 2.0 is officially sketchfu.com. You can sketch something in a small box and play it back as many times as you want. It's free too! You could use it to play something over and over and memorize it, just as you would use flash cards or a study sheet. I think it could be useful, but it's not the best technique to use. It sure is fun though!