"This type, which is sometimes called 2012 Headline and sometimes 2012 Bold, may be even worse than the London 2012 logo. The logo was the subject of immediate parody (some detected Lisa Simpson having sex; others a swastika)."
If anyone is thinking about using a photograph as a source image for their logo, I came across this cool (even if slightly out-dated) tutorial on how to create a simplified vector image from a bitmap using live trace in Illustrator.