I want to make the switch to using my iPad for reading all the articles I use at school. My problem is that I've gotten into a habit of using sticky notes as an easy way to flag important information in hardcopies. Non of the PDF readers that I've tried to date have a good sticky note function. Primarily I would like to be able to make sticky notes on a particular page, but I want the ability to view all the notes on a document in aggregate. This would speed up the process of finding the relevant notes, I won't have to scroll throw the entire document to find each note on its respective page. If anyone knows of an app that has this function, please let me know.