I thought I'd mention that you can download widgets through the Opera browser. They can do lots of things. I installed Touch the Sky, which uses Accuweather for telling what the weather is in the location you set up, the forecast, some radar thing, and maybe more that I haven't looked into.
Once you get the widgets installed, you don't have to run Opera to use them. You can start them independently of any browser.
Didn't realize Opera had anything like that. Good to know. Apparently the server was down on the xfce weather plugin's site for a while yesterday (which, I'm guessing, is what started the whole issue). Once I got the plugin hooked up and working again, it went blank a little later. This time it wouldn't work in root either, but this morning it all came back up. I believe this plugin is also connected to Accuweather in some way. At any rate it's working okay now and I like it there in the panel. I clear away some of the other panel add-ons, like the "Quit" one to make room for it.