Comment by giaour

You could tell from tone and polish how much effort someone had put into writing an answer. That was a pretty good signal for some topics on forum sites like Stack Overflow. There were always nuts and cranks who would happily spend an hour writing well-formed prose about nonsense or something obviously wrong, but the eloquent ones were few and far between. Now every crank is equally eloquent and can spit out 1,500 words of passable prose in seconds.