Forget comment moderation... comment spamming is going to be a much harder challenge. It's already time-consuming to remove spam from one or two sites and to constantly battle new spamming techniques - I don't see how this tool would work well on a global scale.

What about websites/comments in other languages?

How do you moderate content you don't understand?

What are your rules for what's allowed and not allowed?

Also, people often comment when they are displeased with something. As a website owner, why would I want negative comments on my own website? Or comments I have no control of? What if users are just spreading misinformation about my website on my website? Can I request this tool not to work within my web pages?