Google -90 Penalty Minus 90 Penalty Anchor Text

I’ve been running some SEO experiments recently and managed to get 2 previously high ranking phrases dropped by Google.

Someone mentioned on a forum today they were doing similar experiments and had gone from page 1 to page 9

This got me thinking about the infamous Google minus 30 Penalty from around 2004 2006

I quickly checked the ranking of the 2 phrases I was tracking to find one had dropped from position 4 to position 94 and the other had dropped from position 11 to position 101

Both had dropped exactly 90 places and are now at minus 90!

Is this a sign of a Google -90 penalty or just coincidence?

If anyone else has had similar drops see where you are now compared to where you were before the drop and either vote comment below.

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