dataguy - 2:34 pm on Jun 23, 2011 (gmt 0)
Just FYI, in the past week I've seen a huge increase in scrapers spoofing the http_referer to make it look like it's coming from Google search. If I didn't have several layers of scraper detection, I'd be fooled into thinking my traffic from Google was improving.
I've read several reports from webmasters saying that they've been released from Panda, but their income hasn't returned. I suspect their traffic increase is actually due to scraper traffic.