Looks like on Thursday, December 15th there was a Google search algorithm shift. We have some chatter on social media and in the WebmasterWorld forums. It seems like a significant one, but I am hoping this is just a bug or something and that Google did not push anything massive a week or so away from the holidays.

Here are some of the comments from the thread:

The tools are on fire, here are some screen shots:

Mozcast:

SERP Metrics:

Algoroo:

RankRanger:

Did you notice ranking changes today? If so, add your charts to the comments below or ping me on Twitter at @rustybrick.

I am writing this now and not the typical morning post because I am not feeling too hot and I am not sure how much energy I’ll have in the morning to write.

Forum discussion at WebmasterWorld.