Yahoo to put Adverts in PDF Files

Yahoo has reached a deal to start running advertisements in Adobe’s popular PDF document-reading format. The service will allow publishers to make money by including adverts linked to the content of a PDF document in a panel at the side of the page. It is Yahoo’s latest way of expanding the places it can advertise online following deals with the auction site Ebay and the cable TV group Comcast. The advertisements will not appear if the PDF document is printed