I'm not sure how this script got this many good ratings. To me, if it doesn't install correctly the first time, then it's not worth the time. I tried, but it never counted any page hits.
I installed this on a very new site, I know when people are going to the site, and from what pages they linked, but the charts show absolutly no hits. On a more popular website this might not be so apparent, but I consider this a critical flaw.