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 appears on each post so it's apparent that it's coming from the same email address and hence the same person. 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?
New developments to this story...
Examination of recent answers caught by SmokeDetector (to which I've submitted modifications) has revealed that the user was doing this to "test the waters". New posts with this username are now almost universally spam (example link for 10K users):