Follow Button Web Intent
A follow Web Intent window features an inline login form for logged-out Twitter users.
We recommend rendering a Web Intent child window dimensions of at least 550 pixels wide and 420 pixels high.
Web Intent URL
A follow Web Intent must reference a Twitter account by screen_name or user_id. A screen_name may change; we recommend using user_id whenever possible.
|screen_name||The Twitter username of the account you would like the viewer to follow||twitterdev|
|user_id||The Twitter user identifier of the account you would like the viewer to follow||2244994945|