Gordon Weakliem's old blog is here, and his new one is here. He wanted to redirect his rss feed, but Radio doesn't support issuing 301's. So he was trying to use this RSS level redirection, but found that few aggregators supported it. Well heck, I didn't even know that existed! So I sat down and added that support, just now. It's only in the dev stream of BottomFeeder, but it will be supported in the 3.2 release.