[option1138]

Matt,

You are of course correct. The fault is mine for miscommunicating... I find myself becoming less self-editorial these days when I write on the web and tend to think everyone is on the same page as I am.

I was actually referring to an informal study I did earlier this year. I measured sites which were receiving an average of 50,000 or more visitors from Google US search (organic) per month over a six month period. Then I compared those with a similar set from a subsequent six month period to see which had significantly dropped off in traffic and rankings. The purpose of this was to estimate the number of significant sites which were penalized over that period of time. The final estimate came to about 700 sites/year which were penalized. There are lots of uncontrolled variables here of course... but I was looking for an "order of magnitude" answer simply for curiosity's sake.

The 1 million spam pages created per day were of course excluded from consideration as they never received much traffic from Google in the first place.

So just to clarify my earlier response, I am advocating for a policy that would apply to websites exceeding a certain threshold of organic traffic for a significant period of time.