Made correct call, but ...
 

Should I have.
Villian is very loose, like 80% VPIP
He has bluffed and shown the bluff on many occasions.
When he is strong he bets weak.
Weak he bets strong.
(Yes I know I could/should have raised preflop, but IMO it would not have mattered against THIS Villian)

PokerStars Game #9739512851: Hold'em No Limit ($0.25/$0.50) - 2007/05/04 - 01:27:08 (ET)
Table 'Gedania' 9-max Seat #2 is the button
Seat 2: 100% Rebel ($9.75 in chips)
Seat 3: goesto11 ($55.85 in chips)
Seat 4: MUCHACHON ($69.75 in chips)
Seat 5: trottingkrip ($48.30 in chips)
Seat 6: ThreeFiveOff ($25.40 in chips)
Seat 7: McFiddish ($49.25 in chips)
Seat 8: golfermania2 ($51.70 in chips)
Seat 9: Robbr25 ($66.90 in chips)
goesto11: posts small blind $0.25
MUCHACHON: posts big blind $0.50
*** HOLE CARDS ***
Dealt to Robbr25 [Kd Ah]
trottingkrip: folds
ThreeFiveOff: calls $0.50
McFiddish: folds
golfermania2: folds
Robbr25: calls $0.50
100% Rebel: folds
goesto11: folds
MUCHACHON: checks
*** FLOP *** [Ac 9s Ts]
MUCHACHON: checks
MS Sunshine joins the table at seat #1
ThreeFiveOff: checks
Robbr25: bets $1.25
MUCHACHON: folds
ThreeFiveOff: calls $1.25
*** TURN *** [Ac 9s Ts] [6c]
ThreeFiveOff: checks
Robbr25: bets $2.50
ThreeFiveOff: raises $5 to $7.50
Robbr25: calls $5
*** RIVER *** [Ac 9s Ts 6c] [3s]
ThreeFiveOff: bets $16.15 and is all-in
Robbr25: calls $16.15
*** SHOW DOWN ***
ThreeFiveOff: shows [As 2c] (a pair of Aces)
Robbr25: shows [Kd Ah] (a pair of Aces - King kicker)
Robbr25 collected $49.05 from pot
*** SUMMARY ***
Total pot $51.55 | Rake $2.50
Board [Ac 9s Ts 6c 3s]
Seat 2: 100% Rebel (button) folded before Flop (didn't bet)
Seat 3: goesto11 (small blind) folded before Flop
Seat 4: MUCHACHON (big blind) folded on the Flop
Seat 5: trottingkrip folded before Flop (didn't bet)
Seat 6: ThreeFiveOff showed [As 2c] and lost with a pair of Aces
Seat 7: McFiddish folded before Flop (didn't bet)
Seat 8: golfermania2 folded before Flop (didn't bet)
Seat 9: Robbr25 showed [Kd Ah] and won ($49.05) with a pair of Aces

You say raising preflop doesn't matter against this villain, but why? Surely you thought your AK was ahead of his 80% range of all possible hands, right? So why not raise and build the pot when you know you are ahead?

well i woulda called if he kept playin like that, and i had like reads on him and stuff, ya i dont know y u didnt raise preflop there either.

Yup, that sums it up...

By not matter I mean he would have called anyways.
Yeah I see what you mean about not slowplaying my AKo vs this opponant.
I tend to mix my play up a lot with AK because you get weaker A's, like his in the pot with you.
The call on the river was a hard one, which I guess I made that situation happen.
Thx,