The Facebook Tab Manager for WordPress plugin allows you to create landing pages and other types of content to be displayed within Facebook, particularly within the tabs that appear on Facebook business pages and pages for other types of organizations. This provides a way of putting more interesting layouts and functionality into your Facebook pages, without the need to get too deep into fancy programming. You can take advantage of the free social media marketing power of Facebook, or use your page tab as a landing page for Facebook advertising. I wrote about the significance of this development in my blog for Forbes.com: Framing Your Business in Facebook.
One person who tried it, John Hayden of Inbound Zombie, created a great video on basic usage of Facebook Tab Manager to customize your page. You can also see the replay of my webinar on Facebook page tab strategies and Facebook Tab Manager.
You can learn more at facebooktabmanager.com