I've noticed recently that almost every site i go to that has Extremetracking on it will show huge amount of visits like this google.com/imgres/e4e4rrf..sitename.com/imgs/ttgyhki.gif./reshhyhuk/ngtderfs.dn30 Obviously it's not someone searching for 2 images 50 times a day,from the same site, and images from every site. What The Hell Is Going On!!?
Use Google Analytics, you can filter that stuff out and has many more reports and useful tools when it comes to traffic analization.
I find statcounter to be only useless if you have a small site, other wise you have to pay for it. I do over 7 million pageviews a month with analytics for free, even over the so called 5 million limit before you need an adwords account