I'm a bit of a Site Statistics junkie. At times I've had up to 5 site counters running on this site.
SiteMeter is a given. It's free, it's easy and it's reliable - it's been running consistently for as long as I've been running websites. So, it's on all of my websites. However, the stats it collects are a little restricted.
At the moment, I'm also running the Beta version of reinvigorate (invite only - hah!).
However, I've also just signed up for Performancing Metrics now that it has re-opened.

Performancing has a very Web 2.0 feeling to it with lots of historical information from which it produces some clean, crisp graphs and charts.
Quality not quantity!
Posted by: terry at May 20, 2007 7:37 PM