[Y_Not]

I find Foursquare's app much much superior than all-- too bad they're gotten a confused reputation over the years. But from an app UI/UX perspective, it shocks me why anyone would use Yelp's app over Foursquare.

Twizoo is also a new competitor that takes a completely different approach by getting reviews from Twitter. It also uses a data visualization over lists which is interesting. However, I think it's only live in a handful of US cities.