The following infographic by WebHostingBuzz explains the state of social media in the beginning of 2013. You can easily see what kind of content is preferred and where that content is shared.
[Click image for full size version]
Irma Wallace
Co-founder and Vice President of SearchRank, responsible for many of the day to day operations of the company. She is also founder of The Arizona Builders' Zone, a construction / home improvement portal.