Grails Spring Security is a great plugin that allows you to set up authorization for your app with just a few lines in Grails configuration. Users can register to your website, click on a confirmation link received by e-mail and login with the username and password.
Tags : Java, social network, OAuth, security

Eran Hammer calls the specification "a bad protocol."
Tags : Web development, authentication, OAuth

Walk through all the necessary steps for implementing the OAuth token-based authorization system--a perfect security solution for the social networking age--on both the consumer and provider sides.
Tags : open source, authentication, social networks, OAuth