Instructions: grab anything and drag it in to the drop zone below. I've included some text below, but you can drag urls, bookmarklets, files, highlighted text, anything.
Check out the functionality in different browsers, because the same content appears differently when dropped. Something to watch out for in the future.
Change the options below to see the difference between the default Text and sniffing for data (not supported in IE I'm afraid).
Try also dropping a few files from your desktop on the drop zone and notice the content-type: text/uri-list
Dragging files from the desktop into Safari works, but with Firefox nothing happens.
This test is taken from Remy Sharp.
Drop here for info about the dragged item