Apparently at one point I got this strange comment (June 18th to be exact), but the comment has the default Steam logo where the author's pfp would be, no listed username, and it just leads me to the review I made on Turok 2 when I click on the notification, with no comment visible. The author's comment was asking me if I still played TF2 (yes I do btw) and added that he wanted my entire inventory if I didn't. Considering the comment seems to no longer exist, and there are no profiles linked to the comment, did this guy either (1) delete his comment or (2) get banned for trying to scam, cause this sounds like a scam attempt. It's worth noting that I have my inventory set to private, so the person would have absolutely no idea what I have even if he was on my friends list.
(EDIT): I also have my entire profile (save for inventory which is strictly set to Private) set to Friends Only, so that means the person who made this comment would have zero idea I play TF2 in the first place unless he encountered me in-game, so there's that.