It's already happened. Multiple times. Seller is a very old member having sold maybe 100s of items. But that doesn't give him a free pass does it? I asked if the hard drive he's selling has an invoice and packaging. Puns deleted that and all other posts directly related to the item being sold claiming O/T. It's all in the other thread.
As someone involved in the aforementioned thread, one of my posts too was (IMO, unfairly) deleted.
My apparent fault - I had drawn attention to one of the HDDs being wrongly labelled with a sticker from a completely unrelated product line, which the seller readily admitted to (to his credit).
I had then asked to know if there were specific circumstances behind this mis-labelling, as I felt it quite important (and quite odd, since I have never known HDDs to be mis-labelled by a manufacturer). I was at that point genuinely interested in buying one of his drives and felt there may be perfectly plausible explanation behind the mis-labelling.
It was at this point that a mod suddenly deleted a bunch of posts, including mine. And all this while the FS thread is still active, and includes the mis-labelled HDD, last I checked.
For all I know (and hope), the seller may not even have had the chance to look at my post and respond to it. And any future buyer may not spot the incorrect labelling before buying - leading to problems that could well have been avoided.
I understand mods must have a tough job. Still, to have raised what I felt was a relevant query and to have it abruptly deleted - didn't somehow feel right.