I asked myself the question, "what websites have the highest RSS feed utilization?" I found a site devoted to syndicated sites which is http://www.syndic8.com/. This site provides the top 200 most popular feeds. In the top ten, eight of the feeds are related to technical learning and sharing. Answers to how to fix computer problems abound. It appears that the RSS feeds is being used to share trouble-shooting information between computer techies who are backing up like software programs. In other words, the "learning" arising from on-the-job issues is being shared world-wide via websites that have feeds. It's facinating. Leave it to the techies to invent a unique usage for the RSS feed.
The other two most popular websites were about news headlines. It appears that the rest of the world is lagging behind the techies as they are ONLY using this mechanism to just get the news "pushed" to them.
This site also has RSS statistics, RSS articles, and info that is apparently related on Pings, Tags, Web Services, etc. I'll need to learn about all of those at another sitting.