I'd been thinking for a while now about writing some kind of JS app and making use of my .mac iDisk space via WebDAV. Should work fine with XmlHttpRequest. Why aren't more people doing this? I guess WebDAV is not that prevalent. Actually, an even more interesting story would be using SVN, since they support Autoversioning via WebDAV. Slick.
And, by the way, What the frick is that ZIP webdav method? hmmm.
So, imagine I have some nice utilities to access files. Files. What other operating system-ish capabilities could you imagine? Start simple and say you have a 'page' which is really a 'desktop'. You create a windowing system, allow folks to create new windows (floating divs?) with shell trimmings that the 'os' manages. A little app controls the content of the window. hmmm. Kind of like live.com, only a desktop, not a page.