It works with intent but "intent" is really only available to Bing, Google, etc. where the user is searching for something _specific_ to purchase. For instance

It works with intent but "intent" is really only available to Bing, Google, etc. where the user is searching for something _specific_ to purchase. For instance someone googling reviews of Samsung Dryers probably is considering buying a dryer of some kind. The further you get from that initial intent the less valuable your ads are until they are basically worthless.