Chicago Public Schools, District 299, has blocked numerous collaboration sites and file storage sites.

Early in the year, it took me over a month to get my Yahoo Briefcase unblocked. I'm a Tech Coordinator and English teacher. I have a great number of files stored there, which I share with my colleagues, and have also encouraged colleagues and students to use it, as floppy disks have proven unreliable for saving work.

eSnips is blocked.

YouTube is blocked.