I've spent the last hour or so trying to get my head around widgets so I could add my DeviantArt favourites.
The things that has had me stumped is that when you add a widget (or gadget) to BlogSpot, one of the options is to add your own by specifying a URL to it. So this is what I wanted to do--create a widget file generated using PHP and add it to this site.
If anyone knows the correct way to format a widget in its own file, please leave a comment. A simple "Hello world" example is all I need.