AOL will throw your numbers off
AOL uses proxy servers in Vienna and Mclean Virginia and all your AOL users will appear to be from Virginia. Depending on the type of website that you are running, (i.e. consumer products, corporate, or others) this traffic could affect your analysis. Anywhere from 5% to as much as 40%. So even if your AOL user is in another country, it will still show up as Virginia USA. This is a big gotcha that many people forget about.
There are three types of people in this world, those that can count and those that cannot. Anon