I'd partake in a microtransaction system that pays based on the percentage of the article I finished. Some assurance of high-quality journalism would be helpful. If HN existed as pay-to-play for instance (it probably wouldn't), I wouldn't be opposed to paying based on my usage for the curation - knowing that I'm supporting the creators/authors of the content I'm enjoying. I don't think an unlimited plan makes sense - instead pay per article. I think the amount you pay per should be chosen when you create your account, not every time you open an article. I think this is most fair to the creators and consumers with the least organizational bloat.