Please use the following forums for your questions:
- If you're using Google+ Sign-In, join the Developing with Google+ community, or tag your Stack Overflow posts with 'google-plus' and with 'google-oauth' (for OAuth 2.0) or 'google-openid' (for OpenID).
- If you're using OAuth 2.0, join the discussion on Stack Overflow with the tag 'google-oauth'.
- If you're using OpenID, use the Google Federated Login API Forum, or join the discussion on Stack Overflow with the tag 'google-openid'.
- If you're using OAuth 1.0, AuthSub, or ClientLogin, post in the support forum for the API with which you're integrating.