You've negotiated an important agreement, you've reduced it to a written contract, and now you are ready to sign on the dotted line.
Dating a contract will help you to positively identify it later if you need to and will help you place it in its proper chronological context.
For example, if someone is signing as president of a corporation, the signature block should look something like this: Acme Widgets, Inc.
By: _________________John Doe Its: President Why is this so important?
Because signing correctly on behalf of an entity will prevent any later claims that the person signing the contract is personally liable for the entity's contractual obligations. Obviously, you do not want a company to claim that it doesn't have to abide by the contract because it was signed by someone who was not authorized to do so.
Thus, if the other party to the contract is a corporation, you need to be sure that the corporation is actually in existence, that the person signing on behalf of the corporation has the authority to do so, and, that the contract was approved by the corporation's shareholders or directors.