It seems a lot of people in tech believe the ability for anybody to share largely unmoderated content on large social media platforms is very important for free/open online communication. At the same time you could argue there is a desire/need to combat spam, disinformation campaigns, propaganda, hate speech, AI generated content, etc.
Much of the discussion around content moderation is about the many challenges, sometimes suggesting it is an impossible problem to solve. A lot of discussion also suggests content moderation is inherently bad because “free speech”. However, lots of problems are technically challenging and/or ethically challenging (e.g., self driving cars), but are not discussed the same way.
A perfect solution to content moderation likely does not exist, but I am curious what companies are working solely on providing content moderation as a service and what innovative solutions are being proposed. Also, what is the state of the art in content moderation research assuming such a thing exists?