Facebook login button disappearing from websites on privacy concerns
The Facebook logo is seen on an Apple iPhone.Jaap Arriens | NurPhoto | Getty ImagesUntil about a month ago, shoppers on Dell's website looking for a new laptop could log in using their Facebook credentials to avoid creating a new username and password. That option is now gone.Dell isn't alone. Other big brands, including Best Buy, Ford Motor, Pottery Barn, Nike, Patagonia, Match and Amazon's video-streaming service Twitch have removed the ability to sign on with Facebook. It's a marked departure from just a few years ago,…