After huge success of Login with Facebook and Twitter using PHP article I got many request for Login with Google Account OpenID. I have already posted one article for Login with Google OPENID Login, which I updated recently , so you can download the script and use this script for GoogleAuth. Th script is written using PHP and My SQL so this will work great with any PHP site and also can be integrated easily with WordPress Blog or sites. Write me if you need any help for the integration or if you need any further information/clarification for this. Please refer Login Using Google Account | Google OPENID Login for complete tutorial, scripts download and Demo.