Alltop Content NoFollow Social Bookmarking 
Kikolani
JULY 28, 2010
Alltop imports the feeds of popular blogs on a range of subjects (like blogging ) for the site’s visitors and those following Alltop’s category Twitters. Some that I am particularly fond of are Blog Engage (blogger’s social bookmarking site), Blogger Den (the alternative to Digg for bloggers), and BloggerLuv.
ProBlogger
AUGUST 15, 2012
In February of 2011, Google released the Panda update that took rankings away from websites with low-quality content and sites with more advertising than content. Links can do this regardless of whether or not they contain the “nofollow” attribute, contain redirects, come from a site with a high PageRank , and so on.
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