regex regex regex regex rege inture with
/(?:http:\/\/)?(?:www\.)?twitter\.com\/(?:(?:\w)*#!\/)?(?:pages\/)?(?:[\w\-]*\/)*([\w\-]*)/
Powerful Puffin
/(?:http:\/\/)?(?:www\.)?twitter\.com\/(?:(?:\w)*#!\/)?(?:pages\/)?(?:[\w\-]*\/)*([\w\-]*)/