Daily Punch 9-9-13 Strength in Power Attack Feat

You drive as heard as you can to buryyour weapon in your opponents chest.

Prerequisites: Power Attack.

Benefit: For each point of strength bonus you posses, you can choose to take a –1 penalty on all melee attack rolls and combat maneuver checks to gain a +3 bonus on all melee damage rolls. This bonus to damage is increased by half (+50%) if you are making an attack with a two-handed weapon, a one handed weapon using two hands, or a primary natural weapon that adds 1-1/2 times your Strength modifier on damage rolls. This bonus to damage is halved (–50%) if you are making an attack with an off-hand weapon or secondary natural weapon.

You must choose to use this feat before making an attack roll, and its effects last until your next turn.

Thoughts?