Recruiters typically get 20-25% of first year salary, if their candidate is hired. If you're getting recruiters calling you, go ahead and ask them what their fee is. I've done it, and they do give you an answer.
That said, given such a high % fee, you also get an idea of how often they are actually successful.
"One of benefits of publishing something on the web is that if it's the right kind of post and if it catches some wind, it can greatly increase your luck surface area."
Nice opening sentence, but the article doesn't really hook you, as I got three paragraphs in, and didn't understand where this 'luck surface area' was going. I got the sense it was just some naval-gazing discussion of getting blog posts to appear on Hacker News, so I just stopped reading.
More details here: http://code.google.com/p/msysgit/issues/detail?id=320