As a long time consumer of The New York Times' RSS feeds, I was delighted to see just how successful it has been for them. According to this article, over the twelve month period of March 2004 to March 2005, The NYTimes saw a 342% increase in page views associated with RSS feeds. Given that a large number of people (like me) probably just scan the summaries and only read a fraction of the articles, I suspect the actual impact their RSS program is much higher.