Let your users bring LinkedIn profiles and networks with them to your site or application.
http://developer.linkedin.com/index.jspa
JavaScript Libraries and Functions
Get access to data on 1,637,715 websites that are LinkedIn Platform API Customers. We know of 594,134 live websites using LinkedIn Platform API and an additional 1,043,581 sites that used LinkedIn Platform API historically and 358,082 websites in the United States.
Get a list of 1,637,715 websites using LinkedIn Platform API which includes location information, hosting data, contact details, 594,134 currently live websites and 1,043,581 sites that used this technology previously and 358,082 websites in the United States currently using LinkedIn Platform API.