He must have been thinking something though, because Reddit was originally his conception and he was an influence on the earliest development of Reddit as well (edit: and Reddit does have story downvoting - forgot to mention that bit).
I never flag anything because it's recorded on my profile, and I don't want stuff recorded on my profile that isn't useful to me. I only upvote submissions and comments that I intend to refer back to in the future. Upvotes are simply bookmarks to me, so my only tool for voting on the quality of conversation is downvotes. Which, apparently, I can't do for articles without spamming up my profile.
Actually I just checked my profile and saw several flags that must have appeared on a mis-click, just like how sometimes upvotes appear on a mis-click. Fortunately, unlike mis-clicked upvotes, you can still remove these.
Thank you for your tireless work. HN is a breath of fresh air compared with the rest of the internet thanks to it.
The one exception is if some group organizes to upvote something that fits their agenda / business plan. But in this case it's generally something worth flagging and it gets flagged?