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Are social networks time killers or not? I love facebook, facebook is everyday in my country. Twitter is not so often social network here,but I have twitter. Google+ is copy of facebook,but it has better view that facebook. Pinterest is great because it is easy-to-use pinboard that doesn`t need much time to form. And at last Tumblr,it is the biggest time killer of all and I stop using it. 2 best social networks to me are Facebook and Twitter. What are the best social networks to you? :)