[__derek__]

This may be related to my provincial ignorance (I was in Ann Arbor during the check-in boom), but I remember Gowalla being the Lyft to Foursquare's Uber. Of course, there is an actual business model for the ride-sharing companies, so maybe there's room for multiple players.

[Touche]

It's not a great comparison because Gowalla had essentially no competitive advantage, whereas Lyft at least has the chance to have one. Gowalla competed on "better design" for a while but ultimately the network effect of Foursquare mattered far more. Lyft is making headway in some cities so I think they're doing fine.