Lorel - 9:56 pm on Nov 3, 2012 (gmt 0)
My traffic has been occasionally dropping by large chunks over the last year or so. I experienced another drop around Oct 20th as did a lot of other websites I manage.
I believe the recent drop around the 29th is due to the Hurricane (and this is a long term problem in the NE), the 30th due to Halloween, Nov 1st is due to a catholic holiday and we have the election coming up on tues so this recent slump is not likely to improve anytime soon.
Yesterday, I checked to see which keywords rose in rank compared to last month and they were allllll related to recent social networking. Where there hasn't been activity from social sites the ranking was the same or had dropped. So I think there is some validity in focusing more on social traffic.