Every year, the demographics of social media sites change. Some shrink, some grow, and some gain users of different ages or backgrounds. Being aware of these changes is important in maintaining an effective social media strategy.
The following infographic takes data from the Nielsen Group and ranks the big five (Pinterest, Facebook, Twitter, Google+, LinkedIn) in areas like growth, users, monthly visitors and ROI.
All of this is put into an attractive and easy-to-read infographic.
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If you have some time, I encourage you to check out the Nielsen Group source link below for very in-depth information.