NL25 flush on turn, threeway pot

[HarmMan]

The button is like 47/14/1.4, the SB is 27.9/0/1 over 28 hands. Is calling justified here due to the villain behind? Or should I just raise it? Is the flop call ok?

Full Tilt Poker, $0.10/$0.25 PL Hold'em Cash Game, 3 Players
LegoPoker Hand History Converter

Hero (BB): $29.55
BTN: $42.80
SB: $14.90

Pre-Flop: T[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BB)
<font color="red">BTN raises to $0.50</font>, SB calls $0.40, Hero calls $0.25

Flop: ($1.50) 2[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">SB bets $1.50</font>, Hero calls $1.50, BTN calls $1.50

Turn: ($6) K[img]/images/graemlins/diamond.gif[/img] (3 Players)
<font color="red">SB bets $3</font>, Hero...