I am interested in seeing what happens when you apply intentional programming to web search:

http://youtube.com/watch?v=tSnnfUj1XCQ

http://youtube.com/watch?v=ZZDwB4-DPXE

The idea is to open up your search engine so that anyone can submit code for domain specific query entry, search, ranking, and presentation of results. Moreover, such code submissions would compete with each other, with more effective ones rising in popularity in their respective domains.

Unlike APIs that are currently available, the submissions made by users here would make up the core feature set of the service.