I'd be willing to pay a buck to read an article (or blog entry, or whatever), pretty much anytime, or at least way more often than I'm willing to subscribe to something. Like, if there was a no-hassle button that would send 1 dollar to the article creator and give me access, that would be ideal.
Some investigation reveals this has been tried many times and nobody can make it work (profitable to implement as a service) for some reason.
