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What gets hit:
- sites on the same IP linking to each other
- site on a UNIQUE IP that is linked ONLY from sites with the same IP
After the last update my websites show ~same backlinks same toolbar PR but are not in the top ten for the main keywords like they were the last 2 years. Even [ domain-name.com ] search does not return the corresponding domain in top SERPs.
My domain names matches the main KEYWORD1-KEYWORD2.COM that they are targeting and this downfall happened only to the ones hosted on the same IP - so better play it safe!
Also check what you can see on these Google Data Centers for differing SERP results!
NOTE: Can anyone suggest if these G Data Centers are the PAST the FUTURE or just an alternate reality?