This is very common, essentially the default, it's just a matter of whether a site uses the information or not.

Consider, by default apache logs have IP address, and IP address approximately equals location. Actually, that article probably means IP when they say "geographic location".

I just wrote about that earlier. Paypal locked me out after I logged in from 3 different countries in less than 48 hours (I wonder how they handle their Benelux users.)

I log my users every step in my site along with all the browser information I can. It does help with tracking and I can see some neat demographics!!!

Unless specifically stated otherwise most major sites would be tracking and storing IP addresses.