Similar to the way that Kickstarter works, those who pledge money towards a campaign will receive certain rewards like having their name listed in the acknowledgment section of the book (with a $25 pledge) or getting a one-day writing seminar with the book's author (for a $1,500 pledge).
Currently there are five different campaign going on at Unglue.it, though I'm not familiar with any of the titles on the list. Some other, more well-known titles are possible contenders as future Unglue.it books, if enough people vote for them. These include The Hitchhiker's Guide to the Galaxy, Ender's Game and A Brief History of Time.
Unglue.it also allows you to log into the site and add your own favorite books to the wishlist, that you would like to see "unglued." I've been racking my brain trying to think of which books I would add and I'm having more trouble with this than I would have expected. I think I would go with The Lion, the Witch and the Wardrobe by C.S. Louis.
How about you guys?
Which books would you like to see added to the Unglue.it campaign, to be distributed for free, world-wide?
You can find out more about Unglue.it at their website as well as in this article by The Huffington Post.