[DavidAdams]

I think the comment is both quibbling about semantics (the article used the term "technology" overly broadly because the value of the one-click idea isn't in the implementation but really just in the concept) but I think also voices a legitimate complaint.

The same failure of understanding that caused the author of that blog post to misidentify Amazon's one click patent as being related to a "technology" rather than just an idea is also behind the patent office's troubling tendency to issue patents to other ideas. Advocates for patent reform make a convincing case that issuing patent protection to ideas like this actually harms innovation more than it fosters it.

The fact that the actual implementation (technology) of the one click shopping idea, the source code, is protected by copyright is true but isn't particularly relevant. And to answer your second question, copyright prevents anyone from using Amazon's particular one-click source code, but that's largely irrelevant, since it's an idea that can be implemented a million ways, which is a major reason that many people feel it shouldn't be eligible for patent protection.