Should I have checked behind on the turn and called a reasonable river bet? His river bet either seems like a pure bluff or a made hand he wants to look like a bluff and didn't have the courage to try and check raise me (I was checking behind so he was right).

***** Hand History for Game 2850630060 *****
0/0 Omaha Game Table (PL) - Tue Oct 11 21:54:03 EDT 2005
Table Table 36827 (Real Money) -- Seat 10 is the button
Total number of players : 10
Seat 1: xXYYYXx ( $21.95)
Seat 2: notmymoney88 ( $9.40)
Seat 3: pokerrface ( $25)
Seat 4: briachek1 ( $37.85)
Seat 5: HAMMONDS27 ( $46.10)
Seat 6: ezbowler11 ( $27.80)
Seat 7: apd1970 ( $11.50)
Seat 8: KateDaGrate ( $24.75)
Seat 9: Frida83 ( $22.65)
Seat 10: Cowboy27 ( $21.50)
xXYYYXx posts small blind (0.10)
notmymoney88 posts big blind (0.25)
pokerrface posts big blind (0.25)
** Dealing down cards **
Dealt to briachek1 [ As, Ac, Tc, 5s ]
pokerrface checks.
briachek1 calls (0.25)
HAMMONDS27 folds.
ezbowler11 folds.
Frida83 folds.
Cowboy27 calls (0.25)
xXYYYXx raises (0.40) to 0.50
notmymoney88 calls (0.25)
pokerrface folds.
briachek1 calls (0.25)
Cowboy27 calls (0.25)
** Dealing Flop ** : [ 5d, 4s, 9h ]
xXYYYXx checks.
notmymoney88 checks.
briachek1 bets (2.15)
Cowboy27 folds.
xXYYYXx calls (2.15)
notmymoney88 folds.
** Dealing Turn ** : [ 4h ]
xXYYYXx checks.
briachek1 bets (5)
xXYYYXx calls (5)
** Dealing River ** : [ 8h ]
xXYYYXx bets (14.30)
xXYYYXx is all-In.
briachek1: hell of a bluff
briachek1 ????

i usually slow down in situations like this when i btp on the flop and get called. it makes me think that he has a nice drawing hand, and i have no idea what he's drawing to.

again, if pto/pahud stats suggest that he lays down to turn bets often, i might be tempted to continue. otherwise, i check behind and wouldn't call anything on the river with this board (too many likely hands --even weak ones -- beat you).

I figured the 4 could be a really good card for me. If he had top two pair, I now have that killed. If he had a draw, he didn't complete it. The only thing that 4 does is kill me if he had a 4 or a set. As for the river, he could have backdoored a flush, filled up or got his straight.