Protest projector: To my list of high-tech protest tools add this: the SMS Guerilla Projector. A high-intensity light source, it's equipped with a cellphone that can receive and then project SMS messages in public spaces: theaters, walls, government buildings, Bush's next Social Security stump speech. By the London-based art/design collective Troika.

And: From Eyebeam, a recently launched site dedicated to the phenomenology of urban stencils, stickers, and graffiti, StreetMemes. (Also via Josh Rubin.)