Interesting read from +Dixon Jones about Google+ and some information povided by +Pierre Far,

Given the comment "A +1 button can override Robots.txt, on the basis that it is a stronger signal than Robots.txt." I was wondering if there was any chance Pierre might be willing to comment on whether this only applies to a physical +1 button being on the page or if this was indeed true of the official +1 Chrome Extension as well?
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