Chalkbot chalk's up my vote as creative idea of the month

Nike and Neil Armstrong's cancer foundation Livestrong create a robot called The Chalkbot that paints user's messages along the streets of the Tour De France.

You can send in your message via the campaign's website, text messages, or Twitter.

Watch the Chalkbot in action or submit your own message here.

QR Codes slowly being adopted in North America

Since 2007, QR Codes have been a mainstay on billboards and print advertisements in Japan. Here in North America, it appears that only highly tech-savvy people have shown interest in this potentially groundbreaking marketing tool.

QR or Quick Response Codes look like this:

Application developers have created mobile phone apps such as BeeTagg, that allow you to snap a picture of a QR Code that in turn will send you to a URL or display some text. The code above will take you to Wikipedia's main mobile page.

Campaigns that include billboards with QR Codes are being used in North America, but not with nearly as much frequency as in Japan.

The National Post has recently printed small QR Codes in their publications to encourage those who have abandoned reading a traditional paper to read their news articles via a mobile phone. See the National Post using QR Codes here, or watch this video for further explanation.