There may be a simple, mechanical reason. I think there are quite a few people like me, who browse HN by scanning down a number of pages opening interesting sub

There may be a simple, mechanical reason. I think there are quite a few people like me, who browse HN by scanning down a number of pages opening interesting subjects into new tabs until a considerable reading debt is built up. Why do I do this? Well, I do it everywhere it's possible, so I don't have to change context and wait for pages to load every few seconds. In addition, if you try to read each article when you encounter it, the HN page will expire before you get to the More button! Consequently, when I read the articles later and find an especially worthy one, I sometimes try to page back in HN and vote it up. Frequently I don't find the story before I lose interest in the process. I could search, but a number of HN linkers have rewritten the title - a practice I know PG doesn't like, but people do it anyway - making search from the original back to HN more difficult. Lame excuses, perhaps, but I'm not likely to change my reading habits.