Thanks to an agreement between Yahoo and Adobe, PDFs will no longer be advertisement-free. Legally termed “Ads for Adobe PDF Powered by Yahoo,” it is currently in its beta phase. The ads will be located on an adjacent panel and if clicked will open a new window. So far the service is only being used for pay-per-click text and is free for publishers, who can also block up to 200 urls if they don’t want it on selected files. On the upside, readers may now be able to obtain files that were formerly available for a charge or not provided online.