Is it normal to not try to guess who the op is?
There's nothing wrong with guessing who it is, or at least I don't think there is <- maybe some would disagree with me there, who knows.
I get squeamish about it myself.
In some ways, I feel like it's an invasion of a user's privacy to try and guess who has written an is it normal story or poll, even to myself.
In other ways I think it's a futile effort since there are oodles of similar personalities and writing styles going on here. is it normal tends to draw in a specific types of people: introverts, above average intelligence, animal lovers, depressed, horny, open-minded, etc.
Over the years I've seen lots of other users say they can guess who it is, but honestly, I don't bother. Maybe I'm only being lazy. I typically treat every story like it's fresh and written by a total stranger. There are patterns, I see them, but I dislike piecing them together to destroy that person's anonymity.