You should investigate this further based on the expected user demographics of your app. I would expect that most people who post on Hacker News avoid all socia

You should investigate this further based on the expected user demographics of your app. I would expect that most people who post on Hacker News avoid all social login as much as possible for privacy reasons, while many other user groups may prefer it to creating new accounts everywhere out of convenience. Note that any Android phone which is able to access Google Play also must have a Google (GMail) account set up, and you can use this to authenticate the user with minimal effort: http://developer.android.com/google/play-services/index.html http://developer.android.com/google/play-services/index.html