Was 2nd hand at table so no reads. Checked sharkscope and he is a losing player.

What do you do on river? and do you play it the same up to the river?

Full Tilt Poker Game #20476704850: $25,000 Guarantee (155360492), Table 56 – 15/30 – No Limit Hold’em – 15:45:47 ET – 2010/04/30
Seat 1: scottie_262 (3,570)
Seat 2: bobby_789 (2,760)
Seat 3: DannyK78 (2,905)
Seat 4: palpet (5,450)
Seat 5: imweird (3,305)
Seat 6: guitey (3,045)
Seat 7: joancecon (3,195)
Seat 8: jncjcb (2,890)
Seat 9: Jaam69 (2,440)
joancecon posts the small blind of 15
jncjcb posts the big blind of 30
The button is in seat #6
*** HOLE CARDS ***
Dealt to guitey [Kd Qd]
Jaam69 folds
scottie_262 raises to 90
bobby_789 folds
DannyK78 folds
palpet folds
imweird folds
guitey calls 90
joancecon calls 75
jncjcb folds
*** FLOP *** [Ks 4h 6c]
joancecon checks
scottie_262 checks
guitey has 15 seconds left to act
guitey bets 180
joancecon calls 180
scottie_262 folds
*** TURN *** [Ks 4h 6c] [5d]
joancecon checks
guitey has 15 seconds left to act
guitey bets 395
joancecon has 15 seconds left to act
joancecon calls 395
*** RIVER *** [Ks 4h 6c 5d] [Th]
joancecon has 15 seconds left to act
joancecon bets 750
guitey