What's so special about "decent books"? What if you prefer to use an Ereader?
And what's wrong with Hacker News? Through HN I've found TED and KhanAcademy. I'll put Hacker News, TED, and KhanAcademy up against your "decent book" library for comfort and see no reason why someone would discriminate based on that. Interesting criteria you have. I'm highly skeptical of your 30% statistic.