Top social media buzz of 2012

POSTED: 08:19 AM PST Dec 30, 2012    UPDATED: 12:00 AM PST Dec 31, 2012 

Find out how many people were plugged into different social networks in 2012 and what they were posting, based on statistics compiled by The Huffington Post.

Google+ screengrab
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By the end of 2012, Google+ was expected to have 400 million users.

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