How we react to untrue images

I just ran across this video-article that shows four women's reactions to seeing their own images manipulated in Photoshop.

Given that :

• image-manipulation is now nearly completely democratized (in that, perhaps you can get LOTS of industry-competitive software for little-to-no money)
• that we (users in general) depend a LOT on images as our dominant information delivery system,
• and that we know our own faces well(i.e. the "information" delivered by that image is very familiar to us)

I thought it was pretty interesting to see how "users" reacted to obviously false information. How do we react to information that is less obviously false? What can we do as critical readers and designers to more effectively discern that information manipulation?

ENG 3393 homework, due 2/14

• Find an online example of persuasion (per Ch. 8).
• Identify the elements of persuasion that are used effectively (remember, "effective" doesn't necessarily mean "I like it.")
• Identify any ineffective elements (maybe there aren't any, but I bet there are)
• Post a link AND your short list in a comment below. Include your name in the comment.