I've seen allot of great posts on this board that lead me to believe that many people take the time to research and learn about something before they make a post. There are obvious signs of it, and whether I agree with it or not, I greatly appreciate the effort made by the poster, and respect them for taking the time.
On the flip-side of this token, there are a number of people who clearly don't bother. They just repeat some rhetoric that they've heard, and attempt to argue without providing any real information to back themselves up. Nobody is always right, but at least if you try, you're less likely to be totally wrong.