The other great thing about talk/ytalk (which, I think, originated on PLATO with TERM-talk and talkomatic) was that you got to see every character echoed as it was typed, so you could impart/discern meaning by, e.g. typing slower or faster, or making intentional mistakes for humor’s sake, or backspacing/typing/backspacing/typing to show indecisiveness, and on and on. A rich communicative tapestry.
I have to wonder how much security vetting any of these talk software suites have had recently.
I do think fondly back on the early years when you’d get a talk request from somebody and end up meeting an undergrad from Australia or Europe or something.
Back when the internet was magic and not plumbing :)
Weirdly enough, only a few weeks ago I used talk for the first time in maybe 15 years. It took me a while to work out that I needed to enable it in inetd first (heck, what services even use inetd any more - I had to enable it on my OpenBSD system first). Brought back some great memories of my first forays into using Unix systems back in the 90s…