The history of LOL

I really feel as though the term LOL is sercurity word for me. I only type it as a filler when I have nothing else to say or if I am overly shy in a conversation. Or maybe I send it to make myself sound more sure of what I saying. Maybe just to protect myself if someone doesn't get what I am saying or so they dont take me to serious.. It's very odd but since I haven't been using it I feel as though I think more about what I am saying and my conversation seem to been intresting and have more meaning. alot more. Thanks Jon.