Perhaps its a remnant behavior from a time when I would only get voted for excessivly long posts.
Maybe, or perhaps that is what people also prefer to upvote higher?
Maybe long posts if they are sporadic and the idea warrants a long explanation. Thats my two cents.
I think it will depend on the contributor. I see a lot of trash content where there isn't even a basic idea for it, Facebook kind of stuff - yet they still expect rewards on it. Maybe some get it, but I am guessing that consistency develops account value.
Yes those are good points. Consistency may play a factor and it may depend on the users audience