Understanding the concept of social graphs will not only enhance your proficiency with social media marketing today, it will also help you foresee emerging trends. This will significantly help you be fully prepared when new web technologies are launched.
The term social graph was first used a few years ago by Facebook CEO Mark Zuckerberg, specifically in reference to the Facebook platform. Your social graph is a digital map of your personal identity, your primary Facebook friends and everything you share with them.
(Important Update: Facebook no longer supports FBML. Please refer to the articles on Facebook iFrame.) One of the most popular FBML tags is fb:visible-to-connection. A favorite of marketers, this FBML tag allows a Facebook page to show different content to fans and non-fans. When a non-fan clicks the Like button – viola! – the non-fan content disappears and the fans-only content replaces it. As a method of motivating a visitor to become a fan of your page, this can be very effective.
This FBML tag is often—and erroneously—referred to as a “hack”; however, it was created by Facebook to do exactly what it does: ”to display the content inside the tag on a user’s or a Facebook page’s profile only if the viewer is a friend of that user or is a fan of that Facebook page.”