Msg#: 4459286 posted 4:37 am on May 30, 2012 (gmt 0)
I got in webmaster tools (google) a warning
Big traffic change for top URL but DECREASE (not yay) saying the url receives less traffic. I see that page well ranked thought my overall income has dropped dramatically to 55% compared to last year for same month.
Msg#: 4459286 posted 8:14 pm on May 31, 2012 (gmt 0)
This doesn't necessarily mean that your traffic has dropped organically.
I recently got this message -- for years, we had included a link to a certain page in every email newsletter we sent out. A month or two ago, we decided to stop including that link in the newsletter. Since email was the only real traffic driver to the page, visits slowed to a trickle.
Google Webmaster Tools alerted me to the traffic drop, so I can say with certainty that this alert doesn't necessarily have anything to do with organic traffic.