535
it sure beats having to buy it, but seriously come on...
(i.imgur.com)
not being able to ctrl-F a textbook or have click-to-chapter links sure makes studying harder these days... and any scanning software worth it's salt will at least do the bare minimum OCR automatically...
OCR'ing a book before uploading saves so much hours on the user end of things. I wish it were done more so I don't have to leave my computer running overnight to batch OCR stuff.