I kind of see it as, it's not my business, if their going to risk getting caught then they'll have noone to blame but themselves when it comes crumbling down.

You have no idea how tempting it is to "dob" in my partners ex, she's conning centrelink out of soooo much money. But it's not my business so i'm not going to do anything about it.
Plus as much as i don't like her, the extra money's she's getting is at least helping Dp's three yr old daughter Paige be better cared for financially.