Amazing! Gruber's secret? Great content, simple design, and great writing.
A year and a half ago, we profiled John Gruber, whose Daring Fireball blog had become the "homepage for Mac nerds."
Back then, the site was attracting about 2 million monthly pageviews on about 250,000 monthly unique visitors.
Since then, the site's traffic has more than doubled.
According to traffic stats that Gruber just tweeted, Daring Fireball just had its first 4 million pageview month, reaching 700,000 unique visitors.