Not force users to log-in using FB or Yahoo
Not everyone uses FB and Yahoo, and not everyone wants to connect online accounts. Not providing an email address-based account creation option, forcing users to login with a FB or Yahoo account, is annoying and guaranteed I won't use your website/service.
AdminDiveSeven (Admin, DiveSeven) commented
Red, we agree. Security has been a real issue from the beginning and is one of the most challenging aspects of the site. This has proven to be a very difficult problem to solve.