There's an interesting podcast (of approx 20 mins duration) hosted by Bill Hilf where Tim O'Reilly discusses where OpenSource is going and how Open Access to data is of principle importance. Tim talks about how the best applications are those that get better the more people us them - search engines, WIKIs and reviews on trading sites are good examples.

He quotes one of Robert Scoble's earliest posts whilst @ Microsoft where he mentioned a local restaurant that he liked and observed that it's website didn't show in a search engine query (Google I believe) - he said that by the following day it would show due to his readers visiting the site and thereby raising the site's profile in the search engine.

Interesting indeed.