It's nice, but they're going to have a really hard time competing with Latitude and Find my Friends, given that they're baked in.<p><i>there’s also a company philosophy that realtime location sharing is the future. They believe that startups like Foursquare, which requires manual updating, represent out-of-date technology.</i><p>While I'll agree that check-ins are a little messy, they represent an important difference that goes unmentioned- I check in when I want people to know where I am. At all other times, my location is unknown.<p>That's important to me. I don't want everyone knowing where I am on demand- not that I'm doing anything shady, but it just weirds me out and I don't see the benefit in it. Glympse and my own project, Taxonomy (<a href="http://www.taxono.my" rel="nofollow">http://www.taxono.my</a>) do selective sharing- I manually choose who I want to share with, and when. For me, that's much better. But maybe I'm not representative of most people?