PokerStars took over operation of Full Tilt in 2012, and then retired the FTP brand for good in February 2024, officially marking the end of one of the greatest online poker sites ever created.
PT4 stands for PokerTracker 4, which is a poker software program that records hand histories and provides statistics, analysis and record keeping for hands played online.
If a player rolls an acey-deucey (= a 1 and a 2, also called an Ace and a Deuce), he plays the 1-and-2; then they choose any number from 1 to 6 and act as if they had just thrown a doublet of it; then that player takes another turn.