And notably there are some "open" services like Doesthedogdie that should not be considered Open even though as far as I know they don't have rate limits on the

And notably there are some "open" services like Doesthedogdie that should not be considered Open even though as far as I know they don't have rate limits on their APIs or force users to log in. They still claim ownership of all of the content, you don't have permission to take that info and mirror it to another site. Goodreads also springs to mind (although I guess Amazon has started monetizing that now, so it might not be as great of an example). The immediate access matters less to me than Amazon looking at all those user reviews and recommendations and saying, "we own them."