When looking at the questions list sorted by "active", I noticed a handful of older questions that popped up as modified. Usually when this happens it's a mod editing something, but these all showed as modified by 1 rep users. I clicked the questions to browse through the answers, comments, and edits, but saw no activity from the usernames stated on the question list. What's going on here? Am I just blind?
For some reason, today there have been a lot of 1-rep users posting follow-on questions as answers. I've been deleting the posts as soon as I see them, and as appropriate, leaving a comment for the user to post a new question.
You need 10k rep in order to see other peoples' deleted posts, which is why you can't see any visible changes.