Exactly my thoughts as well. I am surprised they don't ask you to sign over your soul too! They don't even have to select a winner:
TextWise does not claim or promise to select any Entrant or dispense any money if, in the Sponsor’s sole discretion, none of the entries meet the Sponsor’s Challenge criteria.
TextWise does not claim or promise to select any Entrant or dispense any money if, in the Sponsor’s sole discretion, none of the entries meet the Sponsor’s Challenge criteria.