Ok, so everyone knows that, but I was particularly surprised. LangPop.com got on the front page of Hacker News the other day and I got a ton of hits. But virtually no one clicked on the advertisements - just a few clicks for many thousands of page views. Some of my other sites, which are of a more general-interest nature, do way better with far fewer visitors.

Not that I'm really complaining, I did langpop.com for fun, but it's a good reminder that it's a lot better to produce and sell things to a more general audience. Programmers expect, and largely get, most everything for free - me included.