A few months ago our development team rallied to build a great app with the YellowAPI in 8 hours or less as part of Confoo – and won the top prize! Their app, Pubcrawl.me (currently on hiatus as they work on some other projects) let you design your own pub/bar-crawl route using Yellow Page listings, and generated a QR code so you could share your route with friends.
Recently, @YellowAPI released this great video that includes captures from the hack, and showcases our dev team. We love it! (And it goes without saying, we think our dev team is pretty great, too).
Arthur, a member of our dev team, writes more about the hack, and the app over here, on his blog.