I haven't noticed anything this week, but recently my main site tripleXworld has seen some very good jumps in google traffic for a few days and then poof.. it's gone. I thought I was about to get back some of my lost traffic from a few months ago, but it was just a tease.
It's all over the place from what I can tell. Up and down constantly for me except for a few solid terms that tend to hold for a while.