This one has been requested a few times recently (kind of odd...) and we decided it's a nice addition:

You can now enable to auto-capture a submitter's location. Based in the IP address, we use the MaxMind database to determine the city and country of the person submitting a form. Due to proxies, VPN and other things, the location may not be fully accurate to the actual location.

Still, this may be useful to some of our customers (at least to those who asked for it). This option can be enabled in the form settings and is disabled by default.