Abstract: The present disclosure provides a computer-implemented system and method for utilizing open space of a document to be printed for selective, targeted advertising based on information (such as demographics) about the user submitting the document. A server connects registered users to a network of dedicated printers that provide free or discounted printing in exchange for the placement of targeted advertising. Targeted advertisements are generated by system operators or submitted by advertisers and stored on the server along with specific placement instructions. The server then distributes the advertisements according to the instructions by merging them into the documents to be printed. Advertiser and user accounts are updated to reflect the transaction and enable various controls and techniques for selecting future advertisements and interacting with placed advertisements.