Systems and methods to propagate and redeem offers via mobile communications. In one aspect, a system includes an interchange and a data storage facility storing a value in association with a first phone number. The interchange includes a common format processor and a plurality of converters to interface with a plurality of different controllers of mobile communications. The converters are configured to communicate with the common format processor in a common format and with the controllers in different formats. The common format processor is to re-associate the value with a second phone number and to use one converter of the converters to communicate a reference of the value to a telephonic apparatus at the second phone number, in response to a request from a telephonic apparatus at the first phone number, when the request includes the second phone number and a reference to the value.