To quote their website:
We need book-loving volunteers to fan out across America on April 23, 2012! Just take 20 free copies of a book to a location in your community, and you just might change someone's life. Please sign up by Feb. 6 EST at midnight.
The goal is to give books to new readers, to encourage reading, to share your passion for a great book. The entire publishing, bookstore, library, author, printing, and paper community is behind this effort with donated services and time.
You can see the list of books being given away here. It includes such YA and children's classics as Kate diCamillo's BECAUSE OF WINN-DIXIE and Sherman Alexie's THE ABSOLUTELY TRUE STORY OF A PART-TIME INDIAN. There are plenty of books to entire adult non-readers as well.