Marketing is a sneaky business. It involves tapping into people’s primal urges and making them want products or services that they don’t need. It’s manipulative. But it’s also clever. We look at five marketing tricks that we know shouldn’t work, yet they always do. 1. Scarcity This really taps into two basic needs: our need for something we can’t have – if something is scarce there is the chance that we might not be able to get it; and our need to belong to the elite – if only a limited number of special editions are available, then how super awesome are we that we got one (or two or three)?…