The numbers speak for themselves ! This is why businesses are crazy if they are not investing time and marketing budget (if they don't know what / how to use facebook for their business, then pay someone who does !) to establish and build their presence on Facebook AND other social media platforms... User Activities, Web Design, Socialnetwork, Website, Social Media, The Social Network, Network Site, Socialmedia, Rede Social
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Social Media in 2013: User Demographics For Twitter, Facebook, Pinterest And Instagram - - The Buffer Blog
On Facebook, We Friend Real Friends & Unfriend Offensive Ones Who gets friended on Facebook? Real life friends, then friends of friends. What gets you unfriended? Being offensive, not being well known or trying to sell someone something.