I should know this, but, what does BTTT stand for?
“Back To The Top.”
For those who view the comments as they hit rather than the articles as they hit. (Choice is at top of page).
It is some old school stuff.
Back in the day, when “articles” and “comments” were displayed in the order in which they were posted,
any comment would send the article back to the top of the list.
BTTT = bump to the top
It just means: Back To The Top.
I use it to save a copy of the article to “My Comments”, so I can find it later.