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This could have significant impact on the mass adoption of Google+ - if many publishers switch from a Facebook or Disqus commenting system to G+. The key to this is the big benefit to publishers - from their comments getting indexed and searchable by Google - thereby increasing their organic search engine traffic.

Large publishers - such as TechCrunch - who use Facebook comments are losing out on organic search engine traffic because those comments are inaccessible to Google's crawler. If they switch to G+ they liberate those comments from the walled garden and should see an increase in traffic from searches.
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Wayne Eddy's profile photo
 
I hope the move works as planned. It always annoys me when I have comment via Facebook.
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