CAPTCHA usability – “Stop hurting the users!”

Inconvenience: deliberate or accidental? — “Enforcing irrational rules. Intentionally putting the seats far from the electrical outlets so people like me won’t steal electricity.”

The ROI on PPC vs. Affiliate Marketing — “You should treat your top performers as important strategic marketing partners.”

What it takes to be great — “The evidence, scientific as well as anecdotal, seems overwhelmingly in favor of deliberate practice as the source of great performance.”