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 1,406,044 websites that are Twitter Follow Button Customers. We know of 305,546 live websites using Twitter Follow Button and an additional 1,100,498 sites that used Twitter Follow Button historically and 176,126 websites in the United States.
Get a list of 1,406,044 websites using Twitter Follow Button which includes location information, hosting data, contact details, 305,546 currently live websites and an additional 525,215 domains that redirect to sites in this list. 1,100,498 sites that used this technology previously and 176,126 websites in the United States currently using Twitter Follow Button.