LikeBtn widget is a like counter, it allows to add the Like Button on the website with just a few lines of code.
http://likebtn.com/
Widgets · Social Sharing
Get access to data on 21,961 websites that are LikeBtn Customers. We know of 6,041 live websites using LikeBtn and an additional 15,920 sites that used LikeBtn historically and 2,970 websites in the United States.
Get a list of 21,961 websites using LikeBtn which includes location information, hosting data, contact details, 6,041 currently live websites and an additional 2,739 domains that redirect to sites in this list. 15,920 sites that used this technology previously and 2,970 websites in the United States currently using LikeBtn.