Find out the IP Location

There are a few ways to get this done for free. First place where I stumbled up on was http://www.hostip.info. This is a community-based project which does locate the geographical location of IP address. They have a firefox plugin which comes handy for the curious souls.

 Other one which I found interesting was http://www.maxmind.com/app/city. This is a commercial one, though they have free country lookup. They have a python api which you can use in your code to locate the country from the visitor's IP address. 

You can find  a few hundred+ of such useful sites which a google search.