Good Day to you all, I was wondering how do apps and websites verify your twitter or facebook account ? You may have come across blogs where when you want to coment, the blog asks you to comment with your facebook or twitter account. They give you 2 fields to fill-in where one asks for your username and the other asks for your password. I am guessing, when you feed your username and password the blog commenting section uses your login details to login to your account and if successful then your account is verified and you're able to make the comment. Else no. I have also seen some forums d