Actual 'words' during communication account for probably 10% of real conversation, maybe even less. True communication is an orchestra of complex elements such as posture, voice: tone and inflection and even hand gestures that really do the talking.
A sobering thought when you consider the recipient of your email or comment will instinctively and within seconds interpret and make a decision based solely on the typed word they are reading. Even the DELETE button will not save you once that message has been received, read and processed...at least not on the other end. It's a 'zero to sixty' world...text carefully my friends.