Great critique of the London 2012 logo, from Coudal Partners. I’m particularly fond of:

It’s simple. When we hear “my kid could have done that!” we think “success.” Some of the greatest logos of all time involve two lines (the Christian cross) or three lines and a circle (Mercedes). Your kid COULD have done that, but she didn’t. Nor did she design the graphics standards manual that goes with it. So give it a rest. Or send us her resume.