OCWSearch, the search engine for OpenCourseWare courses, has launched a search API. With courses from major universities such as MIT, Stanford or Yale, OCWSearch API now lets you search the full index and get information about course title, date, description or names of instructors.
Did you think the search engine wars were over, and Google won? New kid on the block Blekko, currently in closed private beta, urges you to reconsider. Once out, it's bound to become the favorite of search refiners, with the results likely made available as an API.