Two days ago San Francisco I noticed these graffiti of the PlayStation Portable on a garage on Valencia and, I believe, 20th street. Sony pays the owner of the garage one thousand dollars a month with no mentioning of the company on the graffiti at all. The artist came by several times already to fix up the art, the tenant of the garage reported. Today the Philapdelphia Inquirer ran a story about tensions that arose from similar graffiti in Philadelphia and other cities.