Useful CSS Wisdom

I came across this in the most recent Web Design Weekly. I have called it wisdom as it is full of the type of advice that people only have the balls to give you when they really know what they are talking about. Why IDs in CSS should be avoided is detailed. A lot of people rant about this, but there is something about this document that got me sifting through my CSS to find all the # marks.
The document is short and I am going to look back at it a few times over the coming months to make sure I have squeezed the benefit out of it.

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