A method provides a mobile billboard messaging app and non-transitory computer readable electronic storage medium. The method includes a computer database electronically storing merchant/advertiser and user information in communication with a software application running in a mobile device of the user. The mobile device has GPS technology, a display screen and Internet connectivity. The method displays on the user's device messages from an advertiser that are logically related to user preferences when the user device is in a given location radius. Where a correlation is found, at least one message from the advertiser is displayed. The message is triggered when the device enters within the given radii from the advertiser. When triggered, the messaging app provides relevant real-time promotions, deals and coupons related to the user preferences. The mobile billboard displays target messages based on both the user's preferences and the user's geographical real-time location.
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