Thanks for very good application!
If you accept wishes, I have some.
It will be really great to turn a usual rss with embedded youtube video to podcast. There is a python script youtube-dl: http://bitbucket.org/rg3/youtube-dl/wiki/Home , which can download any youtube video. It works fine on N900, so I assume that everything it needs is installed.
It will be really nice to combine gpodder and youtube-dl.
Thanks