soundseeker: NYSoundmap
From soundseeker:
"The NYSoundmap is a map created by citizens that privileges the ear over the eye. The project reaches across the city's geographic, economic, educational, cultural and racial divides. It is at once a historical record and a subjective representation of the city. It is what each user wishes it to be and it is ever growing, ever changing and totally interactive."
Comment: This is a great example of content that could only be created on the web. And it's pretty cool...