Blockies photo graffiti

We're beginning to think that there are as many cellphone-based location tagging services out there as there are people interested in using them (there's already
Grafedia, Yellow Arrow,
Siemens' mobile post-it notes, Cell Broadcast, etc.), but if you can handle one more variation on the theme, there's now also a little something called Blockies. Here's the scoop: you take a photo with your cameraphone, then put up a sticker with a unique ID number. You then email that pic,
along with the code, to nyc@blockies.com and they link your photo to that location so that anyone who walks by later can enter the ID number and have your photo automatically delivered to their phone. Limited to New York City (at least for right now), but in case you were wondering, they will send you the stickers for free.

[Via Near Near Future]