I have been looking for something that will allow my students to present their work to me and allow me to draft or mark this work online. I've decided to try Dropbox which also has the added benefits of me being able to add and access my own files from anywhere there is internet access. Students will need their own Dropbox account for this to work. I have not used it yet so not 100% sure of its potential yet. Certainly everything I have read suggests others think it is a very good web 2.0 tool. Also a bonus that there is an app for my Ipad2 which adds more flexibility.
Watch introductory video.