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.
Life on the web is full of search terms and human filtering. Even good results often require some effort to determine which has the information we seek. There are several services attempting to help with this problem and they're making their applications available via API.
EBSCO announced that Sweden's Stockholm University has selected the EBSCO Discovery Service (EDS) which includes custom integration of the EDS API into the institution's library software platform. The University was looking for a reliable search and discovery solution that would be easy to integrate with the existing library software platform.