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I periodically taking place with the same other domain for one particular keyword.
For one time I taking the 1st, and 2nd place. The other domain taking the 3rd place. Then for some period, the other domain taking 1st place , and mine is on 2nd and 3rd place.
Makes ranking software seem like an antique!
but it will disappear sometime later today.
Go to <one of the online data center tools> and have a broader look, I'm seeing our friend the July 27th filter back today for a few of our sites on quite a few dc's. This could be what your experiencing, there’s flux, and then theirs filtering.
[edited by: tedster at 1:43 am (utc) on Aug. 15, 2006]