The Clue
Start of an aside, to tweeters (3 letter answer)
The Answer
BTW
Tags
Notes
The answer BTW is rarely seen, appearing only about once every 1600 puzzles.
Related Clues
"Incidentally," in a text
"Incidentally," to texters
"As an aside," in chat lingo
"Incidentally," in chat rooms
"Oh, also ...," in text messages
"Oh yeah ...," in a text message
Bit of texting shorthand
Start of a text-message afterthought