The thing that drives me the most nuts is when it is just that one ad, shown over, and over and over again, sometimes twice in a row, which just makes me note to never, ever buy from them ever.
Though I did notice last week lots of unique ads for a while. They were wildly inappropriate to me. It was actually funny to get ads for wheat seed by the ton (I don't live in a wheat compatible location), followed by private plane time-share(don't travel that much). How those are supposed to go together stump me.