Quote:
It is and it isn't trivial. Would you be tolerant of someone standing directly in front of you, screaming, while having a conversation?
Maybe it is simply a fact of growing up in the pre-test, pre-IM, pre-online world; however, all capital letters is commonly accepted to mean the writer is yelling, most usually in anger.
If you chose to be an interactive part of an online community, you are expected to follow the "accepted" rules of writing practice.