Advertisements particularly for local businesses are limited in their ability to track conversion. If a user sees an ad on Yelp, for example, there is no good w

Advertisements particularly for local businesses are limited in their ability to track conversion. If a user sees an ad on Yelp, for example, there is no good way of telling if the ad converted or not - that is that the user saw the ad and made their way to the business due to the ad. Groupon has begun to close this loop - a business automatically knows that a customer came in due to Groupon. There needs to be a more sustainable way for a business to gain traffic though, like Adsense etc offers for online businesses. I would suspect Google Offers + Google Wallet will be an extremely effective solution. Companies will be able to advertise AND track how much customers spent. I would say those metrics are extremely important in order to optimize the ad experience.