I found that interesting. Although I, personally, don't/wont use issuu. I did make enquiries about making an accessible ebook (pdf) alternative available to talkback members, but that permission was not forthcoming. Which I will respect (although there would appear to be no reason that it can't just be done...apart from issues surrounding being a cunt and undermining the value and work others have undertaken).
...anyway....it's there, and a resource...I believe there may be the contributions of talkbackers in there...