I have sold and bought several things through craigslist. I have had some spam/fake responses but they are easy to recognize and just hit the delete key. The one area that I have the hardest time with is the Pet area, when listing to rehome a pet. I had a dog and a couple of puppies dumped at my house and had a heck of a time keeping a FREE add up. I kept the wording in a document and just kept reposting.