We offer a comprehensive, low cost community building and web presence package for non-profits that is built on a customized version of Telligent's Community Server.
Each module, the photo galleries, blogs, forums, file sharing, and blog rollers have built in RSS and ATOM feeds turned on at the option of the site admin.
see
http://www.itscooperative.com/community/ and check out the Ext News link to see content being aggregated from multiple public sources.
If you create an account for yourself, you can configure a personal RSS Reader.
These capabilities make it easy to share information and keep members on your organization's site in contrast to building ad revenue for others.
Note: apologies to anyone offended by our self-reference; do check our example first.