SendHub Sounds Pretty Cool. Haven't Tried it.

Here is a site that sounds like it could be useful if I wanted to add yet another website to my daily life.  I don't have time (yet) to implement it, but it sounds like it actually has a useful application for teachers.  So here is some information about SendHub:

Watch the video so I don't have to type anything more about it:

Now go try it out yourself, then post comments as to how awesome or crappy this service is.  Thanks!