wilderness - 5:15 pm on Feb 3, 2013 (gmt 0)
Had a valid visitor from one their other IP ranges in 2007.
I've some extensive widget articles and pics that are related to the San Fransisco area, and that could possibly be the "logic" for this crawl.
They returned three hours after the 40-pages for more and ate 403's.
I'm going to add their other IP ranges to my denials.