I don't know what's all this about. Yes, someone open sourced a service that is providing an all-around solution for data that's easily trackable-- but the user

I don't know what's all this about. Yes, someone open sourced a service that is providing an all-around solution for data that's easily trackable-- but the user's location. If you've used free services to convert an IP to location, you know it's not so reliable. And that's the issue with the open-source version, which tracks me to the US, while I'm actually in Mexico City and it's quite accurate (12.8 kilometers off). Yes, there's a geolocation API, but it needs user authorization and when you're building a service that requires knowing the user's location without them doing anything, visitor.js appears to be both reliable and at a fair-enough price.