Sure... there are two different types, in my view, of software that uses location information. Stuff that requires knowing exactly where you are in real time, l

Sure... there are two different types, in my view, of software that uses location information. Stuff that requires knowing exactly where you are in real time, like gps navigation software, which is location based. When you log into 4 square and check in at a location, that's a real time transaction. But there is also software that uses occasional location lookups, or data from other applications that use such lookups, and it's not necessarily in real time, and it does so in ways aren't necessarily user initated. It's data which can be gps but also wifi or even cell phone tower based, or even from other apps like navigation software) to do things like figure out generally where you are, give you dining suggestions, tell you about local events etc. When your weather app updates with the local weather, it's probably on some schedule, but it does a gps lookup every few hours. Same thing. When Google Now figures out where you live and where you work using an occasional gps lookup/results from your google maps searches, etc, it's not a real time thing, but it is using location. I believe the iphone lets you set location based reminders. That's also location aware. It's also rich interesting data. And since it isn't always on, it doesn't drain your battery. Now either google, or someone with such data, is going to build an app that lets you opt in to sharing information about your general location, combined with data on your interests, to do some really cool things. Also, It's not something I know too much about, but I understand that there are a lot of location based gay dating/hookup apps that are doing well. Better then some straight ones, especially if you take into account the smaller target audience.