I thought this was an interesting way to do a cloak and dagger scan of a document and then get it back into a usable PDF format on your computer. I am not sure if it offers any advantage above and beyond owning the Professional version of Adobe Acrobat
"A new free service that allows you to take a camera phone picture (or any digital picture) and turn it into a searchable PDF file. If you have a camera phone with at least one megapixel of resolution, ScanR is great for turning things like whiteboard images and paper drawings into something more usable."
