It appears that Google has taken action on spammers, potentially link spammers, in Greece recently.
Matt Cutts, Google’s head of search spam, responded on Twitter to a webmaster noticing that many websites in Greece received penalties. Matt responded saying “ah, you noticed the action in Greece?”
Here is Matt’s tweet:
@realpoisom ah, you noticed the action in Greece?
— Matt Cutts (@mattcutts) March 24, 2014
It is unclear if this was a specific action around links or other search spam but based on the pattern we have seen from Google recently, in all likelihood, it is related to a popular link network in Greece. Which one is currently unknown.
Matt Cutts tweeted it this morning at around 3am EST.