clean. graffitti. guerilla. marketing

here's a creative offline marketing idea straight from ChasNote spotted on the streets of London that's a little more responsible than the ill-fated 2001 IBM Linux "Love, Peace & Linux" street art campaign: Springwise, a British firm called Street Advertising Services “uses high-pressure cleaning machines to wash brands, logos and adverts onto dirty pavements.” (that's 'sidewalk' if you don't speak Brit).

The one of the far right is from eBay Kijiji classifieds site for UK, Gumtree: