1script - 7:35 pm on Jan 1, 2013 (gmt 0)
A new year = new set of keywords (again!)
Just wanted to post an update - the very same thing happened again tonight.
Since I posted this back on Oct. 31, the site had seen the old keywords return gradually and was back on the original set of KWs bringing roughly the same amount of traffic they were for a couple of years before that since mid-November.
Today it looks like another keyword set has been enabled, and it's a completely brand new one, not the ones I saw in October/early Nov. Just like the last time, the total amount of traffic is roughly the same (well, accounting of the Jan 1st hangover) - and just like the last time those KWs I was ranking for for years are nowhere to be found.
What do you think may be causing these KW set switches?