We just added a new feature that you may find useful when creating your next Quibblet; expiration dates. Now, when creating any content on Quibblo, that may become irrelevant after a certain point (”Who will win the 2007 World Series?” for instance), you can set a date after which there can no longer be any voting or taking of the poll, survey, quiz, or test in question.

Look for the expiration date on the creation pages when making your next Quibblet!

Via here.