In the mid 70's I posted on a lot of BBS Bulletin Board Systems using the ARPANET... no photos or attachments ... just Ascii text.
This was many years before DOS or Windows or Apple for that matter.
CP/M was the Operating System.
Back then if you typed with all capital letters it was considered to be "shouting" and was used ONLY when you were pissed off or you wanted to be rude.
One fellow named Bill AWAYS used capital letters and continued even after the "Shout Police" repeatedly harassed Bill about it.
Then one day a message was posted on the BBS under his User Name using the "correct" upper/lower case.
"This is Bill's wife.
Please stop the harassment.
Bill was paralyzed from the neck down when he was shot just after he pulled the pin on a grenade and before he could throw it away.
He types all of his own postings one letter at a time using a "wand' that he holds in his mouth.
I trust that this should put an end to this problem!"
I always remember what I learned in VA Hospital in late 60's!