> For anonymous edits that introduce spam or vandalize the post, reject them as spam or vandalism. If enough of those rejections accumulate, the IP address associated with the edit will become hobbled and unable to anonymously suggest edits.
User did finally sign up for an account, and posted an answer (10k+ rep only) to the question requesting that his edits be applied. I tried to calmly explain (again 10k+ only) what was going on, but we'll see what happens.
Or, well, no. Looks like they deleted their account.