This includes information such as name, email, hometown, interests, activities, and friends. However, this can create issues for privacy, and result in a narrowing of the variety of views and options available on the internet. Multiple Identities - Users can log into websites with multiple social identities allowing them to better control their online identity.[5] Registration Data - Many websites use the profile data returned from social login instead of having users manually enter their PII (Personally Identifiable Information) into web forms.