Yeah, this brought me back to the days of AIM and constantly having a "3" at the end of my messages (and people asking why) because I was pressing the Enter key

Yeah, this brought me back to the days of AIM and constantly having a "3" at the end of my messages (and people asking why) because I was pressing the Enter key on the numpad to send my messages (and sometimes accidentally hitting the 3), rather than the Return key which would add a newline into my message! The distinction was actually a good thing, looking back. Can't even guess how many messages I've erroneously sent in recent years when actually trying to jump to a new line in the text I'm drafting...