Google iCrossing Optimization Tagging 
WebMarketCentral
MAY 18, 2009
Google Social Bookmarking and Blog Recommendation Engine by Key Web Data The inimitable Chris Lang explains social features added to Google Reader (such as bookmarking capability and a friends list), why they were added, and how Google will likely use this information (to create a Digg-like system that can't be gamed).
Webbiquity
SEPTEMBER 8, 2010
A recent study concluded that almost 7% of all business web traffic goes to Facebook, twice as much as Google (3.4%) and well ahead of Yahoo! Facebook pages that use the words “collaboration&# or “blogger&# have on average three times as many fans as pages about SEO or optimization. Report: 6.8% DoubleClick got 1.7%
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