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I agree with all the opinions voiced here. PR isn't really relevant any more. With all the algorithm changes from Google, it can be tough to keep up. I always suggest  following Matt Cutts' blog and video channel. Any time there is even the hint of a change, he usually mentions what is going on at Google. He is currently on leave, but his blog and video channel provides great information!

Hmmm.... something to look into for sure. Thank you for your suggestion and your time.