Message Boards NoFollow Social News YouTube 
Webbiquity SMM
NOVEMBER 2, 2010
She provides an excellent taxonomy of the social media landscape, categorizing the different types of social media tools into: • Social News Sites (Digg, Reddit, Kirtsy, etc.). Social Networking (Facebook, MySpace, LinkedIn, etc.). Social Sharing (YouTube, Flickr, SlideShare, etc.).
Techipedia: Tamar Weinberg
JANUARY 5, 2012
10 Ethical Ways to Buy Links : While some may argue that you need to nofollow links purchased via paid reviews (which is suggested here), link buying isn’t over and is a great way for many people to get the visibility they feel they deserve and the SEO value that may come from it. Social Networks. Notorious S.E.O:
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