I think the feeds a library chooses to provide would bedependent on who uses the library. There have been several examples mentionedin other posts that are great for libraries to use. Job listings are a good idea that could be useful, new or popular books in the library (sort of alongthe lines of what Netflix does with movie titles). Upcoming events at thelibrary or in the area would also be nice to see. These feeds could then be tailoredto meet the needs and interests of a libraries particular user. A publiclibrary for instance would list different books or jobs than an academic orresearch library would. They could also tailor their news feeds to fit theexpectations of their users. I’m thinking now of the research library at TwentiethCentury Fox (who I used to work closely with when I worked in the archivethere, and is now closed). They could have used RSS in a lot of ways to provideusers (primarily researchers for tv and movies) with relevant entertainment or research information. Feeds for Variety or Cinefx or other trade publications would havemade their lives easier. We never really took advantage of the technologythere, but I think the possibilities are endless.
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
I agree with you that two of the most important feeds to have on a library website would be the new materials and job postings. And I also agree with the fact that these would be two very different sets of feeds between public and academic libraries.
New materials feeds in public libraries might consist of juvenile materials and adult materials, fiction and non fiction, those types of divisions. Academic libraries would be more likely to have materials seperated out by department, such as New Business or New Psychology books, because they would have a larger selection of those particular non fiction sections.
Job feeds can also differ. In a public library, feeds would need to be more generalized, such as feeds from Craigslist or the local paper. Feeds on an academic site might be specific to department for those graduating with their specific degrees.