I think that the important thing to keep in mind with online forums is that we do not know one another, cannot judge one another, cannot discern one another’s motives/ intent, and are incapable of discerning what another person understands of the Scripture beyond what that person says.
I think the closest thing to online message boards is pen pals. I bet most Millennials and even Gen-Xers may think pen pals are a relic of ancient history. I suppose that is somewhat true. When I was in grammar school we had an opportunity to have an international pen pal. Writing to another person my age in England was a wonderful experience. Writing a letter takes more time and effort than making keystrokes. The mind is engaged more. There is also something intensely personal about handwriting. Sloppy penmanship, as opposed to careful penmanship, helps communicate personality traits. There are just some things you can do with ink on paper that you cannot do on a computer. Knowing that my letter had to travel across the Atlantic Ocean to a foreign land made an impression on my 10-year old brain. When I received the first letter from my pen pal I was excited! I anticipated the next letter as I learned more about growing up in another country. It was a rich and rewarding experience.
Contrast that with online message boards. Read something that annoys you? With a few keystrokes, you came flame the offender. But you can also encourage someone. The problem is that communication is rapid. How many of us get impatient waiting for a reply to the brilliant post we just made? Must not the world stop because we are engaged in a thread that is ten pages in length within the first hour? Many of us (myself included) do not take sufficient time to consider what the other person is really saying. We judge motives (guilty) and make assumptions (guilty) and feel good about doing so (guilty). We have a burning desire to be right even if that means we cause collateral damage. Of course, I am speaking in general terms. I cannot indict anyone other than myself. However, I find it hard to believe I am the only one that struggles in this area.