> articles in your Opinion section are all partisan sources
Yes, articles in the Opinion section are partisan. That's why they are in a section labeled "Opinion" all by themselves somewhere at the bottom of the page, separate from news reports.
> nine of the ten are from one source.
The section shows the latest 10 articles. If a news source publishes articles on the web in a batch at one go, that section shows them all. We don't control what gets published when and we have stated that at the bottom of the page.
> This is an odd definition of "diverse".
We're still pulling articles from diverse news sources. If you would like to suggest some more, please feel free to do so because we are definitely open to all suggestions.
As always, thank you for your feedback. Please keep it coming! :-)