Store owners aren't the ones leaking the ads weeks in advance, probably an employee or someone that prints out the ads. And putting out fake ads would just bring too much trouble for them on Black Friday. They'll get confused and angry customers wondering why the items they wanted aren't on sale.
I usually stand and look at my watch every 10 minutes. If I'm lucky, I'll be next to someone who likes to talk, a lot. I don't mind listening. Not eveyone celebrates Christmas, sbwolfer. For a lot of people it's just regular shopping.