KJo in unraised multiway pot

[clyden]

1$/2$ stakes - 4 limp, I limp KJo on button, SB call, and BB chekcs (7 SBs) flop is 3s-5c-Js I have no spade. All check to me - SB calls and 1 limper calls (5BBs) turn is 5s SB checks and player to my right bets - I fold. I know little about the players. I considered raising - but passed - thoughts please. [color:blue] [/color]