Latitude's biggest problem is its battery drain. It's hard to get through a whole day without your phone dying, which is a real dealbreaker for location sharing

Latitude's biggest problem is its battery drain. It's hard to get through a whole day without your phone dying, which is a real dealbreaker for location sharing services. We really bought into the concept of Latitude but found it just didn't work well enough, which is why we ended up building Glassmap in the first place. Glassmap also takes a bit of a different approach and focuses more on encouraging social interactions. We let you import friends from any/all your social networks - really helpful for those of us who don't want to bother rebuilding yet another social graph - and also have a lot more social features (pictures/filters/commenting/messaging) as opposed to the straight utility approach that Latitude takes.