Follow Button to your website to increase engagement and create a lasting connection with your audience.
https://twitter.com/about/resources/buttons#follow
Widgets
Get access to data on 1,400,071 websites that are Twitter Follow Button Customers. We know of 291,419 live websites using Twitter Follow Button and an additional 1,108,652 sites that used Twitter Follow Button historically and 168,274 websites in the United States.
Get a list of 1,400,071 websites using Twitter Follow Button which includes location information, hosting data, contact details, 291,419 currently live websites and an additional 521,694 domains that redirect to sites in this list. 1,108,652 sites that used this technology previously and 168,274 websites in the United States currently using Twitter Follow Button.