A system and process is provided for distributing branding and content messages to wireless mobile devices such as mobile handsets. The system has a mobile media portal process that enables a content owner and one or more sponsors to cooperate in negotiating, planning, and executing a branding or content campaign. For a campaign, a set of consumers has indicated a desire to receive particular content information on their mobile handset, and may have used a web interface or their phone to provide demographic information and content choices. A media center interface, either automatically or under human control, associates a particular marketing message from a sponsor with the content information, and distributes the marketing message and information to the user's handset. Since the marketing message has been selected and adapted to the demographics and preferences of the user, it is likely that the user will positively respond to receiving the marketing message.