I have been following Jeff's blog since a little after I started programming. I have seen his articles—especially those having strong opinions—criticised vehemently. Jeff even wrote post about people who email him how they hate his blog. But, I find it delightfully amazing that he stuck to his programming roots and found two successful ventures nonetheless.

I think he's a great example of power of doing things. He didn't start a blog with any objective other than just to write. And he wrote prolifically. If you follow his blog posts, you'll realise that he's rarely more than a person who loves computers. But, because he did things without dissuasion, he kept improving, until the success started building on his efforts.