Great concept, really cool "graphic design". But, if we're sticking to the "rules of posters" the type isn't big enough. And without "the rules" what do we have? Anarchy. And lord know we don't want that. But really, who are we kidding. How many of the color posters on this site ever see a telephone pole? At best they are proudly displayed in store windows for a few days before they are stolen. In that context, I think as long as they create enough interest to get someone to walk up and read them, then they work. Maybe "the rules" are changing.
As an 11x17 street poster, it don't work so good though.