Startup Idea : Bad Parking Sticker/Website

I have the website and even a unique image to place on the window stickers but I'm lacking the time/money to launch in the right way. The idea is to sell window stickers via postal mail or print and stick to people that want to make a point by leaving our window sticker on cars parked wrong, e.g. double parked. There would also be a section where customers could submit photos of the offending car with our sticker on it and others would be able to comment. This idea is not new and there are similar sites like it already. Do you think there's room for another? I'd be willing to take on a partner and split any profits with the right person.