I can’t stand those people who think their product or service is so fracking important that they need to drop a flyer under my windshield wiper. Usually I just toss the flyer, I’ve never bought any product, used any service, or attended any event as a result of some flyer on my car.
That said, some enterprising individual decided to drop CATALOGS AN INCH THICK under the wipers of every car in the corporate park where I work. I never even bothered looking at it, but it does keep my coffee table from wobbling.
Annoying.