| Official Google Blog: Robots Exclusion Protocol: now with even more flexibility | This is the third and last in my series of blog posts about the Robots Exclusion Protocol (REP). In the first post, I introduced robots.txt and the robots META tags, giving an overview of when to use them. In the second post, I shared some examples of what you can do with the REP. Today, I'll introduce two new features that we have recently added to the protocol.