Seth Godin mentions using Google Analytics in his list “The 8 Free Things Every Site Should Do”
He says “Google analytics [is] Useful and addictive and free.”
He's right. Every morning I log in to my Google Analytics account to see who's been to visit. Today I learned that I've had a vistor from Makati. It's in the Phillipines. I had to Google it. And one from Kathmandu (not the shop), plus others from the US & closer to home in Oz & NZ.
Google Analytics is easy to join, informative and, I have to agree with Mr Godin, addictive.
(I've also signed up Purrgatory — but no-one from Makati has visited there yet.)