Ah, thank you both. Makes sense.
I have dumped all the points into the line that ends with "Force of Nature", and whatever was left over is in SoW and Snares... When I get more I will look the other lines (AGI, STR, etc.)
One other thing, when I maxxed out the line, I was given three melee CAs that take the place of the Spell CAs on the timer... what is the point to duplicating these abilities? Both cost power, and the new ones from the AA line do LESS damage than the Ad3s I had scribed...
I guess it's true, I must be senile, otherwise this would make sense, too!

(<---- right smiley this time!)