Always a must-have Rated 5 out of 5 stars
Flagfox is a much more useful tool than you might think at first glance. Geolocation is an important science when viewing everything from your emails to your website reputation.
Certainly when you claim to be from one country but send me halfway across the globe to get there, there may or may not be a legitimate reason for that site being hosted halfway round the globe. Can also telll you where that credit card site askign for personal details is truly about to process your information. IP adresses, DNS, and much more available.
It's a nice little addon that is a part of my trusted addons for regular use.