"Tubes is the easiest and most powerful way to extend your desktop to the web and the web to your desktop.
HOW DO YOU USE IT?
Simply drop anything onto a tube icon on your desktop and Tubes instantly provides a URL to that file. Now you can send the URL to anyone and they can access your file as if right off your hard drive. No upload required.
WHY IS THIS BETTER?
If you make changes to the file on your hard drive (locally) the URL still points to it, so people are assured they always access the latest and greatest version. Further (and amazingly) Tubes instantly creates an entire website for the content you drop in a tube. That's right - the photos, music and videos on your computer now also have their own place on the web. And you control it all.
HOW DOES IT WORK?
We can’t tell you everything, but here is the crux of the Tubes magic. When you drop something in a tube on your desktop, we push a copy to our server in the sky and constantly check and replicate any changes made by any members of the tube. We generate HTML code to produce the local tubeSite and replicate that code to our server online. And we run a local webserver so you can view your tubeSites offline. Cool, huh?" -
Source
http://www.tubesnow.com/
Peace