People need to understand that their is another human being on the other side of the screen. They are not robots. They can feel, and see, and hurt, and grieve, just like any of us. They have feelings to, and harsh words, rants, or anything of the sort can come off the wrong way to the wrong person. Remember: just because you are typing something in a friendly, playful, manner, does not mean that the person on the otherside knows that you are being friendly. You cannot read tones.
A little respect, a little kindness, a little forgiveness...it all goes a long way. You do not know what others are going through; some probably more then you. Everyone does have their own battles, little or big.
Just my 2 cents.
this is not targeted to any person in particular, seriously, this is just my general say.