Checking in on it's own has never been appealing to me. I dismissed 4sq early on as a fad and stupid. However, as a component in a life-streaming service, 4sq f

Checking in on it's own has never been appealing to me. I dismissed 4sq early on as a fad and stupid. However, as a component in a life-streaming service, 4sq fits nicely. Back in the day I used brightkite to give me daily checkin / location data for a bike trip across the US. I've been playing with http://timehop.com/ http://timehop.com/ now and have a reason to use foursquare. How this helps them build a sustainable business, Im not sure.