Enable users to share your website with LinkedIn's audience.
http://developer.linkedin.com/plugins
Widgets
Get access to data on 733,983 websites that are LinkedIn Share Plugin Customers. We know of 146,256 live websites using LinkedIn Share Plugin and an additional 587,727 sites that used LinkedIn Share Plugin historically and 97,021 websites in the United States.
Get a list of 733,983 websites using LinkedIn Share Plugin which includes location information, hosting data, contact details, 226,776 currently live websites which includes 80,520 domains that redirect to sites in the list. 587,727 sites that used this technology previously and 97,021 websites in the United States currently using LinkedIn Share Plugin.