taberstruths - 8:27 pm on Nov 11, 2012 (gmt 0)

Rasputin, It is Google traffic. Before March, Google traffic was strong until Friday afternoon and would pick up Sunday afternoon/evening. It was a gradual decline and a gradual increase. Now it is like a light switch is flipped. Usually happens right after noon Pacific Time on Thursday and varies on when it comes back. Bing/Yahoo is 20% compared to Google.co and it stays relative constant with a slight drop over the weekend on Friday through Sunday.