Learn Ranger Trap
You learn how to create one kind of ranger trap.
Prerequisites: Survival 5 ranks.
Benefit: Select one ranger trap (see page 64). You may use this trap a number of times per day equal to your Wisdom bonus (minimum 1). The DC for your trap is equal to 10 + 1/2 your character’s level + your Wisdom bonus, and it lasts 1 day per two character levels.
If you are not a ranger, you can only set extraordinary traps with this feat; like all extraordinary ranger traps, this decreases the trap DC by 2.
Special: A ranger may use ranger traps a number of times per day equal to 1/2 his ranger level plus his Wisdom bonus. See the description of ranger traps for durations.
I was looking over this feat, as it is reprinted in Kobolds of Golarion. The second line seems to imply that every time you take the feat, you would choose a trap and that trap has its own number of uses. For example, you could take the feat twice and have an 18 Wisdom. Trap A would be available 4/day and Trap B would be available 4/day, independent of Trap A.
However, the special line at the end implies differently. It seems that you have a total number of uses for all your traps, all drawing from the some pool of uses. Our 18 Wis ranger would have traps 4/day and can use either Trap A or Trap B in any combination up to 4/day.
Is there any clarification as to which method is to be used or developer intent?
Feats can only be taken once unless they specifically state otherwise.