Ads that clean the streets? Cool!

My buddy Colleen Wainwright, a.k.a. the Communicatrix, just sent me this super-cool link. Full-service guerilla ad campaigns that not only use only water, but they actually clean up dirty streets. Too cool!

An excerpt:

The idea for the [Street Advertising Services], which launched last year, came to founder Kristian Jeffrey out of sheer frustration. Jeffrey explains: "I run several small online businesses, and was searching for cost-effective advertising to attract consumers to my sites. My potential customers were walking around me every day, and it was when I was walking through the dirty streets of London that the idea came to me: why not take advertising literally to the street? Having experimented with several different methods, we wanted to apply a technique that was not just eye-catching and effective but also friendly to the environment. What could be more natural than water?"

The full post is here. Now how cool is that?