Mark Wilson writes at Beta News: Can a joke be copyrighted? Twitter seems to think so. As spotted by Twitter account Plagiarism is Bad a number of tweets that repeat a particular joke are being hidden from view. The tweets have not been deleted as such, but their text has been replaced with a link to Twitter's Copyright and DMCA policy. Quality of the joke itself aside -- no accounting for taste -- this seems a strange move for a site and service which is largely based around verbatim retransmission of other people's low-character-count declarations, recipes, questions, and Yes, jokes.