Probably the main reason they blocked all the game sites etc, for us, was so many kids used to play games when they logged onto the school network, and even though we have a T3 line, with all those users on around the school, the connection wont be as fast as it would be with less people on, etc. So since those games and other downloads, etc., take up a lot of bandwidth when theres a lot of people all at the same time doing that, it just becomes a mess. I just think they went a little too far with how much they blocked.
Anyways, I could care less about the bandwidth issues, I would have rather had certain places unblocked for just downloadinig movies, or trailers, etc, when Im bored in a class and we have computer lab time.
