Recently at the O'Reilly Radar

The O'Reilly Radar blog is a great one for scanning new tech trends as well as trends in the tech book industry. Some interesting stuff from the last few weeks:

• Creating Engaging User Experiences by Tim O'Reilly
  
• Another War We're Not Winning: Us vs Spam by Dale Dougherty and, related, Adaptation by Marc Hedlund
  
• The Economics of Online Advertising by Tim O'Reilly