Logging on today showed a new badge for me.  I now have the Tagger Leader icon.  Well past 600 tags to get it but I won't stop tagging until I get the Tagger King badge.  When I first started using the tags I didn't get it at all.  Then I progressed for a year or so only by using four catagory names that I felt most of the games I was interested in qualified as: City Life, History, Fantasy, and Space.  When I figured out that the world existed in more than four catagories I got started.  Wouldn't you like to be a tagger too?