Good and Cheap is a cookbook for people with very tight budgets, particularly those on SNAP/Food Stamp benefits. The PDF is free and has been downloaded more than 1,000,000 times. After the PDF went viral online, I launched a Kickstarter project to fund a print run, using a "get one, give one" system (like TOMS Shoes) so that people who bought a book for themselves could give another copy to a family in need. The campaign was tremendously successful — I asked for $10,000 to print a small batch, but I ended up with 5,636 supporters who raised $144,681! That...