What is a widget?
A web widget is an interactive graphic that can be placed on any web page including your blog, a wiki or a social network profile like Facebook or MySpace.

How do I upload it?
Just click on the widget where it says "New Widget: Click to Share". This will open the share screen. Click on the service (i.e. Blogger, MySpace, etc) where you wish to share the widget or copy the code yourself.