Mint is a popular
website statistics monitoring program that rivals AW Stats and Google Analytics in many peoples opinions. It has tons of different statics you can monitor by adding "peppers" to your control panel and I believe there is also a desktop widget for the MAC OS and a plugin for the iPhone.
If you are serious about running a design business online you should monitor your websites statistics to see where your visitors are coming from among other things.
I will write a more in depth post about website statistics on my
graphic design blog later on!