I modified the code that Hari Karam Singh posted earlier to work to the to-date Twitter.
__cnt__=0; jQuery('.stream button.follow-button > span.follow-text').each(function (i, ele) { ele = jQuery(ele); if (ele.css('display')!='block') {console.log('already following:', i); return;} setTimeout(function () {ele.click();}, __cnt__++*500); });