<prompt> Human: Im selling a guitar on craigslist, and a guy contacted me interested in buying it. Before I realized someone was trying to scam me I gave them my work address and name, and they sent me a cashiers check for much more than what I asked for the guitar.I havent deposited it yet, should I send it back or destroy it? EDIT: Thanks for the quick responses! Im gonna go report it.  <response>: Throw it out since its worthless. This is such and old scam. They will then contact you and ask you to refund the excess. 