Ads infect PDFs

The virus that is advertising has made its way into the PDF, Adobe's popular file type. Yahoo! reached an agreement with Adobe that will allow the search monster to place dynamic advertising into the sides of PDF files. It's unclear if the ads will be incorporated into Adobe Reader or the ads themselves. The BBC article makes it seem like the ads will be accessbile from any PDF reader. So, say goodbye to the integrity of the PDF, since the whole point of a PDF is to allow the designer to have total control over the content of the document.