Link-building Tips and Tools for Bloggers in a Post-Panda and Penguin World
ProBlogger
AUGUST 15, 2012
Later, social networks like Digg, Last.fm, and others were affected as well. Remember that link building should not just be solely for increasing search engine rankings or building up PageRank. Then you will want to at least submit to quality ones like Alltop (free), Best of the Web Blogs (fee required), and Technorati (free).
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