Nothing devastates website traffic more than getting on Google’s bad side. While SEO teams worry about changing algorithms and penalties, there’s another aspect of Google that tech teams should be aware of: the Google Blacklist. Even if your site is available, Google Blacklisting prevents visitors from reaching it. And the results are catastrophic. Sites on the Google blacklist can lose up to 95% of organic traffic. Google blacklists about 10,000 sites a day. They take web security very seriously.