Genuine Google apps use OAuth all the time ... really relies on the app developer not lying about its name and app logo, and that's just not good enough.

Signing into third-party applications via a Google Account involves sending an OAuth request. Over the next year, Google will be disabling login requests sent from web-views and other embedded ...

We know Bray is working on OAuth and OpenID-related projects, and Google announced in a blog post today that it is adding OAuth 2.0 support for IMAP/SMTP and XMMP. The majority of Google’s API ...