I'm working on a piece on aggregators and news sources, which I will post later this week--meanwhile, these are interesting presos that turned up while digging around in the Infonortics April 2005 search engine meeting:

• Jan Pederson, Yahoo, Internet Search Engines: Past and Future
• Tom Wilde, FindWhat.com, Content Management on the web: the next killer app for search
• Stephen E. Arnold , Google News and Google Crawler/Search Optimization
• Tuc Loung, Ask Jeeves, a Holistic Approach to Search (2004)