How the social sign up works in Midrub
Since Midrub 0.0.8.2 the social sign up in Midrub was improved. The guests can't Sign Up in Midrub with a click, the social networks only provides the email, first and last name. Also, the social networks provides the user's id.
All this data will be used to fill the Sign Up's form. The guest should invent a password and approve the terms and services.
I know is a little more complicated than was Midrub at the begin, but i think this way is more professional and guest will approve the terms for Sign Up.
The social account will be saved in the users_social table. With a little coding, you can add in the user's settings the possibility to allow user to connect multiple social accounts and then to use them for Sign In.