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...those who were negatively impacted are probably more likely to take the poll. That being said, 65% said they were negatively impacted by Penguin...
I think it was thoughtful of Barry to note that the poll might be skewed by likelihood of response
When you think about it, Penguin is more likely to hit websites that have been SEO'ed and those webmasters in turn are more likely to be voting in that poll.
But Google characterizes it as spotting attempts to manipulate it's algo.
What they will be is failures in the old algo that suddenly become successes in today's.
I'd love to see a poll of what end users think