Matt Cutts Announces Google Panda 4.0 Update

The news was broken today by Matt Cutts of Google to say that Panda 4.0 is to be rolled out from today (21 May), but it seems that the changes have already started to take place with ranking drops being reported as of 19 May. Matt Cutts has since tweeted that the rollout did indeed begin on 19 May and that the target is ‘very spammy queries’.