Looks really good. GJ :) One feature suggestion: User comments on casts. Could be done with up/down voting. This gives the users a possibility to help each oth

Looks really good. GJ :) One feature suggestion: User comments on casts. Could be done with up/down voting. This gives the users a possibility to help each other clear up things they were unclear on after watching a video. Look at Kahn Academy for an example of what I'm thinking.