Scapblog.com uses the lazy registration pattern to lure its users into signup. It postpones signup until the user has put enough time and effort into the web application, that not signing up for an account would make him or her loose work put into the application.
mandynicole added this image to his evanta collection.
imsoper added this image to his User Engagement collection.
Other collections include: User Engagement, Registration - login, lightbox