Did you know that Twitter is the social network with the strongest growth rate in 2012, ahead of LinkedIn, Pinterest and Reddit?

Facebook? That didn’t even make the cut. Still, when you’re closing in fast on one billion users, your annual growth rate does tend to slow down a smidgen. Still, don’t shed a tear for Mark Zuckerberg – save those for the owners of Digg, Bebo, Friendster and, of course, MySpace, who are the four social networks most in decline, reminding us that success in this space can be both dramatic and fleeting.

This data comes courtesy of Ignite Social Media, who have compiled the infographic of infographics about the state of social media, worldwide, in 2012. Ignite’s research revealed that while social media as a whole continues to plateau – we haven’t seen any real growth, planet-wide, since 2009 – there are many success stories to be found. Pinterest has quickly established itself as the de facto social network for women, and Plaxo (who knew that was still going?) is incredibly popular with senior citizens.

Check out all this, and more, in the visualization below.

(Source: Ignite Social Media. Social media globe via Shutterstock.)