Context: Disqus and similar tools allow content creators to have an embedded "chat box" so that site visitors can comment on your content.
I noticed recently that when I sign up I can claim ownership of any domain, even if I don't actually own it.
I found that rather concerning, but personally don't know what the risks of this could be.
Does anyone know of any known issues that Disqus et al have had as a consequence of this? Or issues that could occur in the future? I assume they don't do domain validatiion because it creates friction in the sign up process.