Facebook Connect is a system that allow any user with Facebook account to join your site easily, with just 1 single click. It saves your visitor the hassle of registering to yet another site and maintaining another set of username and password. With this system, your site can easily verify the identity of your site visitor and log them in to your site easily.

Facebook Connect delivers a number of benefits, including:

Traffic Enable over 300 million Facebook users to share your content with their friends on Facebook. Let users publish a story, invite their friends, or send an event. Their friends then click back to your site.

Engagement Users can immediately find their friends and engage. More friends leads to more activity and more pageviews. Connected users create 15-60% more content than users who have not connected with Facebook Connect.

Registration Every website wants registration to be easy. We have 300 million users, simple registration, and robust data. By increasing traffic, user engagement, and registrations, you can grow your revenue and increase monetization opportunities.

You can find out more about Facebook Connect at Facebook website, http://developers.facebook.com/connect.php