YouPublisher

Another great Web 2 tool (free) that I like is Youblisher. You upload your pdf files and it makes the document 'flippable' so the pages turn - it makes it more like reading a 'real' book.

I have embedded a small pdf (2 pages) so you can see how it works. This is great for schools - children could make their own pdf files to add to classroom blogs or wikis.