by Heather Gunn » Sun Jul 31, 2011 2:42 pm
That is correct, unless stated otherwise you only threaten squares adjacent to you, even if you have a reach weapon.
However, there is stance in the Pole Weapon style called Standing Crane that can make your full reach threatening instead, as long as you are using a staff or spear weapon (such as the longspear, glaive, or bardiche).
That said, I might consider other methods of modifying your threatening area, but threatening area not adjacent to you is quite powerful, so I have been very careful with it.