This interesting interview is found on the Sun site. Here is a sample:
Question: You have compared where we are in 2004 with RSS, with 1993 when the web was taking off. Where are we headed with RSS?
Answer: RSS works well in areas where information arrives at irregular intervals, such as news and publications, in which you don't want to waste time looking for information -- you want to be told when it shows up. So, right now, RSS has a huge sweet spot for bloggers and for news sites such as the New York Times and the BBC World Service. But a lot of useful information, such as stock market portfolios and credit card transactions, arrives at unpredictable intervals. RSS users don't need to repeatedly visit their favorite web sites to check for updates, because when the site changes, they are notified quickly with a summary of what's new. To know when one of your investments changes substantially in price, or to be able to track debits in your bank account, is inviting.
Possibilities abound. RSS might be useful for tracking change requests during a software build or for bug tracking. So, there's a lot of information that people would like to be automatically notified about. It's too early to know all of the RSS sweet spots, or when RSS will work better than email, instant messaging, or a phone call. We do know that RSS is going to be a major part of the communications spectrum, along with Java software.
Question: RSS is strongly identified with blogs, but as you suggest, its uses extend far beyond blogs.
Answer: Right, blogs, almost by definition, use RSS, but there are many applications of RSS outside the blogging space. Basically, anybody who's blogging now is producing RSS. The fact that so many RSS feeds exist suggests that, of course, you would want to aggregate them. And there are people who are starting to do that. Technorati (https://www.technorati.com/) aggregates huge numbers of RSS feeds, and allows you to subscribe to the aggregates, or search them in real time. It's very different from a Google search, and a potential game changer. No one can predict where all of this is going at this point. But it's a space we're very interested in, and we want to do the right thing in.