This weekend, I was visiting friends in Maine and one of them was struggling with a PDF. This friend is a graduate student and most of her research (articles, chapters, etc.) is in PDF. Her research process has always involved printing each article and marking it up with a pen. As the research increases, so has her budget for printer ink until she has finally decided to explore paperless options. This is where I come in to the picture. She already uses Google Drive and Docs for much of her work, so it seemed logical to find a tool that fit in to that universe. We settled on Notable PDF, a Google Drive App. And it is awesome.