Calibre was also mentioned in this month's "American Libraries", the magazine of the ALA. They had an article on e-readers. While the article and the research it describes leave something to be desired, it might of interest to some.
For those who don't want to RTFA in it's unfriendly interface, it cites calibre's ability to download RSS feeds and articles.
http://site.ebrary.com/lib/ala/docDe...330670&page=58
Cheers,
John