I've always thought - if it's possible for someone trawling HN to build a pretty comprehensive profile of users based on usage pattern, comment structure, and o

I've always thought - if it's possible for someone trawling HN to build a pretty comprehensive profile of users based on usage pattern, comment structure, and occasional personal details shared (like gender, familial status, location). I think it'd be pretty easy for most accounts that have > 1000 comments.