Robots (bots) have outnumbered people on the Internet for almost two years, and they browse much faster than your average visitor. Aside from spamming your comment systems and crawling for vulnerable websites to attack, bots can also cause a lot of confusion in your website traffic reporting systems.
If you use analytics software on your website, you may have already noticed some strange, inexplicable referrers in your reports. The scourge of malicious referrals and bad bots is becoming a real problem. Over the past six months, Google Trends shows an exponential increase in search engine queries involving “referral spam” and “google analytics spam.”