I'm literally lol'ing out loud

The modern challenges of communicating laughter digitally. We address such important questions as:

• What's the difference between: Lol, LOL, LOLOL, Hahahaha, LMAO, ROTFL, and "literally dead"?
• Is saying "lol'ing" is nonsensical or is it acceptable in the same way "ATM Machine" is (even though "ATM Machine" is not acceptable FYI)?
• Is dying of laughter a legitimate medical concern? (You actually don't have to listen to this to find out the answer. The answer is "no", or you can just google it)