flop set, flush card on turn, sh... new guy

[Actuary 3]

Party Poker 0.50/1 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cxPreflop: SH_New_Guy is UTG with 2:spade:, 2:heart:. SH_New_Guy calls, 1 fold, SH_New_Guy calls, Button calls, SB calls.Flop: (8 SB) 9:heart:, 2:diamond:, 3:diamond: (4 players)SB checks, BB bets, SB calls, BB calls.Turn: (10 BB) J:diamond: (3 players)SB checks, BB bets, SH_New_Guy calls.River: (16 BB) 4:spade: (2 players)BB bets, SH_New_Guy calls.Final Pot: 18 BBI was pretty new; but noticed quite a bit of post flop aggression.This UTG 22 is light, I know. so far at .5/1 I'm ont seeing much PF raising at all. So I thought my implied odds would justify a limp here.