What is it?

A shell-extension for all versions of Windows allowing you to copy a file to a public FTP server by right-clicking any file or folder in Explorer and select "Sling to Public Site".

Once uploaded you will get an unique URL you may share with your friends.

That's it.

What does it cost?

It's free. Enjoy!

Where do I get it?

Just download and run the setup.

It's even Open Source if you're into that kind of stuff.