tedster - 5:13 am on Jun 7, 2012 (gmt 0)
Relevant post from diberry in the June Updates thread [webmasterworld.com]:
--For most of today, I was ranking lower on lots of my usual phrases. This evening, I suddenly ranked higher on them. This sort of pattern keeps repeating, sometimes in reverse.
--And within that pattern, there are two fairly distinct SETS of keyphrases. One day, it's all my usual standbys that are fluctuating in position, but the next day it's a bunch of other phrases I've never ranked that well for. Sometimes the keyword set will shift during the day.
--Despite all these shifts, I'm getting a set amount of traffic from Google each day, and it never varies by more than about 30 searches.