[afish]

I've played craps infrequently, and I've seen two kinds of errors more than I expected: (1) dealers take your place bets and forget to place them (not good); and (2) dealers forget to remove losing come bets when there's a 7 on the come out roll (very good). I've seen mistake (2) enough to believe that making come bets is probably close to 0 EV.