NFC has already shown a lot of potential giving people a lot of new commodities in their daily life. However, with the costs of this technology dropping day by day, the potential this technology could have in advertisement and publicity stunts across our country and the globe is gigantic. In this article you can see some example of companies across the world that had used NFC and its applications for advertising purposes:
http://letstalkpayments.com/10-companies-using-nfc-offering-advertising-marketing-campaigns-clients/