Every so often, I get an edit request come up in the approval queue, which takes an answer with a link in, and replaces it with gibbering pseudo-sentences.
These edit suggestions always come from anonymous (therefore unregistered?) users. As questions and answers require registration, why don't we apply the same standards for suggesting edits? Especially as I have (so far) not seen a genuine edit from an anonymous user.
SE accepts contributions by anonymous users because the goal here is to create a database of quality questions and answers, regardless of who provides the content. If there's someone out there who might have a valid contribution to make to the sites, why force that person to register?
Now I agree with you that this mechanism inevitably attracts spam edits from geniuses who think that SE users are sound asleep whilst reviewing posts. However I trust in the reviewing system and, as your experience shows, it seems to work.
