The Software Marketing Newsletter looks to be an active source for current news and info about blogs, rss, software, and marketing.
(Note; found this via an 'RSS' keyword search set up in NewsGator. Further note; the prior post in that feed was from Der Spiegel's RSS feed, entitled "Islamkritischer Filmemacher erschossen". Wheat and a bit of chaff ... ...).
-- Article Syndication -- Key to Content -- argues that RSS is found money for web sites which depend on fresh content