Plugin to allow pinterest functionality in WordPRess.
http://wordpress.org/plugins/pinterest-pin-it-button/
Widgets · WordPress Plugins
Get access to data on 176,672 websites that are Pinterest for Wordpress Customers. We know of 52,998 live websites using Pinterest for Wordpress and an additional 123,674 sites that used Pinterest for Wordpress historically and 39,769 websites in the United States.
Get a list of 176,672 websites using Pinterest for Wordpress which includes location information, hosting data, contact details, 52,998 currently live websites and an additional 25,374 domains that redirect to sites in this list. 123,674 sites that used this technology previously and 39,769 websites in the United States currently using Pinterest for Wordpress.