Low limit O8

I've been playing a lot of low limit O8 sit and go's on FT recently and doing pretty well.  There's a lot of people out there who just don't have the first clue what they are doing at O8.  The money is not huge since I am playing $5 and $10 tourneys, but I've been happy with my play and it gets me some practice both at tournaments and at O8, which I really only get to play live these days at pink.  Plus, while I'm not in school, it's a good way to kill some time.

Was cruising along in one today until this rather unfortunate hand (see below).  After this, I played the short stack really strong and was hanging tough til my nuts on the turn got baby flushed on the river by someone hanging in with the nut low draw.  Booo...

As far as this hand, yeah I probably shouldn't have played it in the first place (though I was in the small blind), but what the heck is the whitewood47 doing calling all the way for?  The only card that can come to make him/her feel happy about his/her hand is a 4.  Nice hit, sir.

Full Tilt Poker Game #4881575068: $5 + $0.50 Sit & Go (37055970), Table 1 - 300/600 - Limit Omaha H/L - 13:26:46 ET - 2008/01/16
Seat 2: slykwyly (4,201)
Seat 4: whitewood47 (3,108)
Seat 6: sk1126 (3,720)
Seat 9: malikat (2,471)
sk1126 posts the small blind of 150
malikat posts the big blind of 300
The button is in seat #4
*** HOLE CARDS ***
Dealt to sk1126 [Jd 7c 7s 5s]
slykwyly calls 300
whitewood47 calls 300
sk1126 calls 150
malikat checks
*** FLOP *** [Ks 7h 3c]
sk1126 bets 300
malikat calls 300
slykwyly calls 300
whitewood47 calls 300
*** TURN *** [Ks 7h 3c] [9c]
sk1126 bets 600
malikat calls 600
slykwyly calls 600
whitewood47 calls 600
*** RIVER *** [Ks 7h 3c 9c] [4h]
sk1126 bets 600
malikat raises to 1,200
slykwyly raises to 1,800
whitewood47 calls 1,800
sk1126 calls 1,200
malikat calls 71, and is all in
*** SHOW DOWN ***
slykwyly shows [2s Ad 2c 2d] a pair of Twos, for high and 7,4,3,2,A, for low
whitewood47 shows [5d 6c As Tc] a straight, Seven high, for high and 7,5,4,3,A, for low
sk1126 mucks
whitewood47 wins the high side pot (794) with a straight, Seven high
slykwyly wins the low side pot (793) with 7,4,3,2,A
malikat shows [Qh Ac 2h 5c] Ace King high, for high and 7,4,3,2,A, for low
whitewood47 wins the high main pot (4,942) with a straight, Seven high
malikat ties for the low main pot (2,471) with 7,4,3,2,A
slykwyly ties for the low main pot (2,471) with 7,4,3,2,A
*** SUMMARY ***
Total pot 11,471 Main pot 9,884. Side pot 1,587. | Rake 0
Board: [Ks 7h 3c 9c 4h]
Seat 2: slykwyly showed [2s Ad 2c 2d] and won (3,264) with HI: a pair of Twos; LO: 7,4,3,2,A
Seat 4: whitewood47 (button) showed [5d 6c As Tc] and won (5,736) with HI: a straight, Seven high; LO: 7,5,4,3,A
Seat 6: sk1126 (small blind) mucked [Jd 7c 7s 5s] - HI: three of a kind, Sevens
Seat 9: malikat (big blind) showed [Qh Ac 2h 5c] and won (2,471) with HI: Ace King high; LO: 7,4,3,2,A