We're rough on newcomers, think 'Project Mayhem'.

About ducks:
The way you mentioned stack size, you're probably a tourney player. If that's the case, then early in a tournament you may want to limp them in early position and raise them if it's folded to you in late position. On the flop you're probably going to check/fold unless you hit a set. Later in a tournament the strategy becomes more about fold equity and stack sizes (yours and your opponents, too) there's more info on that in the tourney forum in one of the stickies on top.

If you want a better idea bout set mining in cash games and in the early levels of tournaments, read this.