Phil Villarreal is a Consumerist contributing editor and an Arizona Daily Star reporter. His new book, "Secrets of a Stingy Scoundrel: 100 Dirty Little Money-Grubbing Secrets," is a guide to being an insanely cheap person. He is also on the Twitter, natch, where he teaches you how to get $12 shoes. In this excerpt, he teaches you how to get free pet medical care. Also the book has a chapter on timing your breakup to pay for fewer birthday and Christmas presents.