Geolocalization, Geolocalisation, Geolocation?
For a while I’ve been wondering which one (if any) of these terms is proper english. The first two ones appeal to French speakers like I am (the French word being “Géolocalisation”), but it turns out they’re as far from Shakespeare’s language as it could get. On the other hand, the third one, Geolocation, is designated by Google, and therefore by the Wisdom of the Crowds, as the proper one 
Here at MapMyGlobe, we use a tiny bit of IP geolocation (or more accurately, we’ll use it in the next release) to position a pin for the user when he creates his own profile page.
IP Geolocation is also a very important piece of my other project, MapMySearch, a mashup that enables you to locate on a map, the servers hosting the top results of your search in Google.