Reddit does a simple link comparison to see if the article has been submitted before, which does limit the double-posts, however some people then intentionally

Reddit does a simple link comparison to see if the article has been submitted before, which does limit the double-posts, however some people then intentionally subvert the process by running the link through a processor like outline.com or archive.is, or simply finding alternate articles from other sources. This is unfortunate as the thing I really want to see is an in-depth conversation about a topic more than an individual article.