When to use
This move is arguably Jin's longest range poke, with good counter hit properties. So it can be used as a keep-out move. For example, as the opponent tries to close in for an attack, do Front Thrust Kick, it will most likely counter hit the opponent, allowing a juggle for good damage (~60 in DR).
The properties (range, juggle on CH) of this move have been toned down in Tekken 6, so it is not used as much by Jin players nowadays. Nevertheless, it still remains a good move to use.
This move also hits grounded opponents when their feet is away from Jin, or if they attempt to sideroll on the ground.