As for the common complaint that you always see ads for products you already purchased, that's actually a very good time to make an impression. What are the odds that you are thinking about buying a new dishwasher at any given moment? Probably next to 0. You probably would completely ignore any dishwasher ad you saw. Now imagine you just replaced your dishwasher with a new one. You probably noticed that dishwasher ad now. You might have even clicked on it to see if you got a good deal on it. You probably care more right now about dishwasher specs than you ever have in your life up to this point. Maybe there's a better deal out there. This is the perfect time to send you more dishwasher ads.