WordPress.org

This plug-in will let you setup auto-login for your wordpress blog; meaning that if you have parent website with Login functionality and you want some of users based on some role/rights or login credential to be able to login to your WordPress blog then you can do that with it. It's pretty simple you can specify multiple websites with different users for each of them.

Plugin Home: http://blogs.digitss.com/projects/wordpress-plugins/ Plugin Help: http://blogs.digitss.com/wordpress/wordpress-auto-login-for-friend-ally-websites