The goal is to get them into the libraries and not to push sales.
Regarding profits... there actually isn't any "reaping" going on. Literally only pennies on each book sale go toward to the authors. We sell the books directly from the BYC store to help keep the site going, but even there, the proceeds are pretty slim.
The real reason to get the book into libraries is to make the resource available to as many people as possible to help promote the correct care of chickens. The reason to get the book out in circulation and in front of other chicken books is to get people to come visit BYC and join our community.