Interesting concept.
Socialight lets you put virtual "sticky" notes called StickyShadows™ anywhere in the real world. Share pictures, notes and more using your cell phone.
StickyShadows™
You can create StickyShadows using your mobile phone or this web site. A StickyShadow is made up of media, such as text and a picture, and information about who can see it and when and where it's available.
http://socialight.com
