I had a clarification question on Can a creature use both its melee and ranged natural attacks during a full attack? so I left a comment which actually helped me formulate an answer. On writeup and review of the question over the last two days, I noticed there were 10 or so comments on the ticket (question).
When I went back to respond to some feedback on my answer, there were 0 (on the question, the comments on my answer were there).
This really surprised me since the question comment I asked actually helped me answer the question, so I assumed it was valuable (maybe I'm wrong?).
Regardless, is it bad form to ask why it was deleted (in another comment)?
I did read Why are site comments being deleted? and I don't believe it answers my Q but I wanted to semi-tangentially note that while the first answer bashes mxyzplk specifically a bit, one thing I've noticed is he generally posts why he removed a bunch of comments when he does so. As does SevenSidedDie. Not trying to suck up but at least that'd potentially prevent this question from being relavent if everyone did that regularly.
PS: I am pretty sure there's a level of rep which lets you see more details but I think this question is still pertinent for folks that don't have that or are ignorant of that detail.