Hosting NoFollow Paid Search URL 
Kikolani
MARCH 11, 2013
Backlink History – Our Backlink History tool allows SEOs to determine the number of backlinks detected by our sophisticated web robots for given domains, subdomains or URLs. They also offer a tool called Clique Hunter that can find all of the ‘cliques’ that link to a list of domains, but it is for paid subscribers only.
Techipedia: Tamar Weinberg
JANUARY 5, 2012
Should I Change My URLs for SEO? 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.
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