In September of last year, I put out a collection of short stories called 11 out of 10. I solicited contributions from readers online, and I've been selling the book for $2.99 on Amazon (of which Amazon takes a cut). I've been donating all profits (and change) to Deworm the World Initiative, a charity that treats parasitic infections in developing countries.
So far, I have sold over 3,000 copies. I've donated about $6,000 to this charity.
The book has been out a little over a year, and I had figured that after the first year, I'd drop the price to a dollar and just give like a thousand bucks to the charity to cover any income it might make in the future. But considering I've still been able to donate $200/month from the book, it seems like it'd be better to just keep going!
Anyway, I want to say thank you to everyone who bought a copy or contributed. It's pretty cool how much money the book managed to raise.