Human v Computer

Who is the number one user of your web site? Humans or other computers?

According to Google Webmaster Tools, my top searches were for the following words:
  • Wave - 22,200 search for this word with 140 actual clicks to visit my site. With an average position of #14 @ Google.
  • Coffee - 2,400 searches for this word with 16 actual clicks to visit my site With an average position of #330 @ Google.
Who is the number #1 user of my web site or Google? Human v Computer?