Hypatia Nachshon writes:

"Tx" is not Twitter (I don't have it or any social groups).

Tx, along with FWIW, POS, FOAD, AFAIK, and a few others in common use,
are perfectly ordinary Internet discourse.

MAYBE some of the above are common on Usenet, but "Tx" certainly
isn't. I certainly don't interact with people that use a few of those.

Most people on Usenet try to write complete, correct sentences
with correct spelling. Show a little pride and write like you're
going to be graded.

--
Dan Espen