So i'm getting a little scared here. I've had a site or two move around here and there but never seen this before. Almost all of my sites have dropped several ranks on google over the past couple of days. One of my main sites which was in first on google completely dropped off the radar. It's still indexed but nowhere to be found. These are sites that have been ranked in their spots for months most of which have slowly moved up in rank over the months. I've NEVER seen so many of my sites actually drop in rank before. I've seen one or two do a google dance before, disappearing and reappearing, but not this.
One thing i have noticed is that it isn't only my sites that have moved, but other people sites also. So i'm wondering has anyone else been experiencing this? What's going on? Is this a bad sign?