We've been doing that on Maemo News (http://maemo.org/news/ http://maemo.org/news/) for a few years now. Works well, especially if you couple it with local, HN-

We've been doing that on Maemo News (http://maemo.org/news/ http://maemo.org/news/) for a few years now. Works well, especially if you couple it with local, HN-style voting and assign a separate weight for each relevancy source