Over the last several days, we've been seeing a novel trolling attack on Super User: a flood of answers containing plagiarized content posted by a user called "Marlin Woods":

The user creates a new account for every post; however, the same Gravatar is used so it's apparent that it's the same email address that's being used. Because the accounts are unregistered, they do not show up in the Users page under new users > creation date.

Can we get someone to stop this ASAP?