Geographical IP information
Interested in working with identifying where an IP originates from geographically? Maybe for your website (you could localise the display or whatever) or maybe for your applications? Actually I heard about this in connection to how the Conficker worm/virus works, Conficker actually use this database to orient itself, yeah I know it’s a crazy world out there 😉
Both a free and a payable version is available, I haven’t looked into the API yet – but if you are into web development then this is not likely to ruin your day.