Whitey - 9:43 am on Mar 13, 2012 (gmt 0)
Well in some verticals the reduction in content has been enormous due to those effected. Typically affiliate groupings, but many serving up quality, but stale content.
We're talking big no's - 60k+ networks of affiliates down to less than 15k producing, the others producing zip. Multiply that out across the web and you have some serious attrition which won't come back. And there's probably more to come.
In my mind this is Google upgrading "quality" with a view to concidentally forcing the distribtion sytem via it's own assetts eventually.
I can't put a number on it, but it is likely substantial in concentrated areas, which makes the magic 12% considerably higher in some or those verticals IMO