I agree with you Bob. I wasn't so much outspoken, but I'd chatter nervously about rubbish, just to fill silences. Part of my social anxiety. Now I find I have more confidence to just be quiet. Also, I notice I really listen and hear what ppl are saying, instead of not paying attention because of all that useless inner chatter going on!
I will admit i have fired off a drunken, ill thought message or two on Facebook.
I've have no use for FB now, I'm so glad i deleted my account.