This (now deleted) user clearly wants his account deleted and everything he ever posted to vanish off of SO. He's non-stop erasing the contents of his questions, even after we rollback. It's getting so silly that some of them have been made CW.
Should we be stopping such cases? If so, is flagging for moderator attention all we should do? Should there be a method in place to auto-detect such vandalism?
Yes, we did try tell him to stop his madness (link requires 10k of reputation on Stack Overflow).
The user has been suspended for 7 days. This ordeal lasted about 90 minutes and resulted in an average of 50 revisions to all 42 of the user's questions. Each edit bumped the question, forcing needing questions off the front page.