As expected, Google’s Matt Cutts announced last night before his chat at SMX Advanced on Twitter that they have begun rolling out a new algorithm to target spam in more spammy industries in Google.

Matt Cutts wrote:

It is not fully rolled out yet, Matt added:

This specifically aims to target more spammy like industries where the link building and spam tactics are more extreme. Matt added more details while at SMX, which I covered at Search Engine Land.

Matt said that this impacts about 0.3% of U.S. queries but up to 4% or so of Turkish queries where spam is a larger part of the index there. Matt also added that the techniques targeted here are often “illegal” tactics that he won’t discuss.

Matt discussed this in his video from a few weeks ago 2 minutes in 30 seconds in. Here is the transcript, followed by the video:

Some folks have already started complaining about their rankings in the forums at Google Webmaster Help, WebmasterWorld and Black HatForums.