Are any of you dead-eyed smartphone-having folks using this yet?

It's another social-networking thing that lets you announce where you're going out - pubs, bars, and so on. Yes boring boring boring. However, the feature of vital importance is that it gives you a videogame-style list of achievements to unlock, BUT FOR REAL-LIFE BARHOPPING. This is the best thing evar, although not great news for my liver.

Your thoughts / usernames plz.