Handshake deals fall apart over the details of the agreement. Oral contracts are often useful for simple exchanges such as "I will trade you my old air conditioner for your old refrigerator." But for deals with a multitude of finer points such as employment or lease agreements, it's always best to get your deal in writing. For those of you who still feel uncomfortable asking your buddy to sign a piece of paper, remember—it's not so much an issue of trust as it is of clarity. Perhaps Nixon said it best when he quipped, "trust everyone, but cut the cards."