Today’s guest post is written by Neal Schaffer.

Despite having preceded Twitter and Facebook in the social media space, LinkedIn, which was launched in 2003, has so far been unable to capture a larger share of social media users.

Many call LinkedIn the “black sheep” or the underdog of social media.

Social media demographic statistics show us Linkedin only has 150 million registered users, way below the nearly one billion Facebook users or Twitter with more than 400 million users.

See this excellent infographic for full details.

It’s also said only half of those LinkedIn users are actually active on the site.

Why is this the case? Let us take a closer look – and then ponder the question why we should care and how to use this to our advantage. (more…)