Share ideas in the art of deception.

Let's get a good list going of ways to con people.

Bait and switch.

http://en.wikipedia.org/wiki/Bait-and-switch

Lure them in with a good deal then raise the price. Good way to advertise, not all fall prey to the psychological mind games though.

http://en.wikipedia.org/wiki/Master_suppression_techniques
These are five suppression techniques. There are more, like http://en.wikipedia.org/wiki/Reductio_ad_Hitlerum – successfully frame someone as a «Nazi» (or even «Nazi sympathiser»), and people stop listening to them. Very useful for stopping critics and whistle-blowers. And if «Nazi» doesn't cut it, there's «Paedophile»…