Some of the social hacks possible are so stupid that anyone falling for them deserves to be the subject of Dark Arts.
Do you really claim that you are not affected by things like this (though not necessarily this thing in particular)? I really doubt it's conscious.
http://www.economist.com/node/18483423?story_id=18483423&CFID=160796263&CFTOKEN=71303356
After reading this, I'm seriously considering finding someplace online that sells those little Lacoste crocodiles and sewing them onto all my shirts. The power of logos appears to be ridiculous for the trivial outlay.