Targeting Spam > Facebook adds nofollow to Pages links - SEO thoughts from Ian Miller
[SEO thoughts from Ian Miller] Taking a look around Facebook pages today, I noticed all these previously followed links appear to be nofollowed, adding an “untrusted link” state to the code.
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Some related posts from Technorati and Google.
[Matt Cutts: Gadgets, Google, and SEO] PageRank sculpting: Think about sites like Twitter and Facebook--they succeed by chasing a vision of what users would want. In chasing after that ideal of user happiness and satisfaction, they became the sort of high-quality sites that search engines want to return, because we also want to return what searches will find useful and love.
Reflected tags on Technorati: Blog, Nofollow, Targeting Spam