inus (Min.us) provides a simple way to share files with anyone. To use Minus just drag a file onto the blank Minus canvas. Once your file is on the canvas Minus will provide you with links to share your file with others. Minus will also generate a HTML code that you can use to embed your file into a blog or website. Those people with whom you share the url for your file can also download your file.
For those of us who have had the pleasure of spending some time with Dr. Lodge McCammon, we know all about these paper slide videos. For those who have not, here is a brief introduction. Paper slide videos are exactly what the name says. Students create slides on blank paper, write scripts that explain the slides, and then the teacher videotapes the students delivering the script while moving the slides in time with the script. The filming, though, takes place over the shoulder of the student sliding the slides, and the rest of the group is out of the shot delivering the script. Still confused? Have a look at this short demonstration of some paper slide videos my students made. This should clear things up.
The ability to digitally scan documents on-demand in class, make it viewable in large form, then write, erase, highlight on said document is an incredibly valuable tool.