My project ties QR codes to Twitter, Foursquare, and Facebook profiles: http://www.getaquirk.com/ So you can scan a QR and easily follow, check-in, etc.

Currently debugging a change in the FB API that broke something. But still something to check out if you're into QR uses.

How strange, this was just discussed over on Reddit! A user posted about their library having new vending machines, people were discussing QR codes for nutrition and stuff, I suggested QR codes for liking remotely.

It's an excellent idea and will probably happen with the rise in smart phones, maybe blippy are in a position to do this, maybe they're already developing it!

I like it but can't see it taking off until QR readers are standard on mobile OS'. I imagine the percentage of users with both smart phones and QR applications installed on them is pretty small.

To me, this seems about as pointless as Foursquare; and yet just as interesting to marketing folks.

It may seem that way to you, but just look at how popular Foursquare is. The general public loves it.