mhansen - 11:36 pm on Sep 19, 2011 (gmt 0)

Sustained dip on sites with a local relevance, beginning on the 17th, maintained through today.

Sustained 40-50% increase on niche-info type sites, started on the 13th, maintained through today. (on sites I watch, this generic site action/reaction is typical within 4-10 days after a large googlebot crawl)

MH