http://myinboundmarketing.com/penguin-2-0/
Penguin 2.0
Penguin 2.0 Penguin 2.0 was a game changer for many. Those that relied on amateur SEO ended up seeing drastic drops in traffic and in sales. those that relied on auto-linking or nuke style links were removed from the front page overnight. those that had obvious footprints were also hit unexpectedly. those with un-natural anchor [...]
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