Odd Terms of Service

Haven't seen this before. In the Terms of Service governing email submissions to a popular site, it says that:

You must include a signed copy (with your signature and the signature of your parent/ legal guardian) of this Submission Rules and Requirements agreement (the “Agreement”) with any Submission.

Not only do I have to check the "I accept" box, but have to waste a stamp too! Satire, lack of effort, or a case of forcing people to accept the most extreme terms possible?