So I built Textius (with support from my teammates/business partners). It relays SMS messages to users who have checked in on Foursquare within 250m of you, essentially creating ad-hoc chat rooms. All in all, for a rookie Ruby dev, it took about 18 hours.
I wish there were some sample screens I could share, but this all goes on in users' phones. We had a 6-person test the other day, though, and it was actually a lot of fun!
What do you guys think?
