Heard about OpenID but not sure where to get started? Used OpenID but want to learn more about integrating it into your groovy Web 2.0 application? We'll give a brief history of OpenID, how it grew from a grass-roots community at Six Apart to being supported by major vendors such as VeriSign, Symantec, Microsoft, and AOL, and then dig into multiple code examples. With Open Source libraries in many languages (Ruby, PHP, Perl, C#, Java, Python, etc.) it is easy to integrate OpenID into your application. We'll walk through a live example of enabling an application and leave you with the resources you need to enable your own.