You could present articles in chronological order.
>you're still favoring the groups that are in fact able to get you to consider things as news
Yeah, that's essentially what I was saying.
Or another example: the website itself is far easier to contribute to with stable electrical supply, broadband internet access, and an ample supply of free time. You can bet that the news is going to be more relevant to white-collar first-world educated folks than subsistence farmers in rural India. I mean, yeah, Indian subsistence farmers could contribute in principle, but in practice, you're going to get a lot of news suggestions from other folks, and those suggestions are going to wind up as news articles.
Your second paragraph is a separate, and good, point.