Not just documents and photos. In general, working with files on the web is difficult since JavaScript doesn't (yet) let you access the file system. If Dropbox

Not just documents and photos. In general, working with files on the web is difficult since JavaScript doesn't (yet) let you access the file system. If Dropbox provides really good support for this, they can solve the entire file headache and open up for a whole new type of web applications, while at the same time providing seamless access to the resultant files. This is a pretty big deal.