I don't think I'm going to download the Highlight app. The thought of it kind of freaks me out. With more and more GPS-centric apps, I think it's just too much of a security risk to let the whole world know where you are at all times. When a stranger can approach you, know your name, and continue to follow your location from time-to-time.... it's just too much.
I remember when people were worried that "Big Brother is Watching You" might become a reality. Now, we're downloading apps that invite "Big Brother" into our lives freely. Better yet, each one of us is Big Brother now.