The point of this Federated Indieweb thing is to move comments (and all other content) out of the Web 2.0 silos like Facebook and Disqus because those companies aren't trustworthy stewards of our data.
I understand that, I'm simply saying that bloggers' liability for third party comments is no worse for Indieweb than it is for the centralized services, and nobody's complaining about it for them.
The problem is to overcome the adoption scale of Facebook (that's not SO difficult) and Disqus (the REAL opponent).
The advantage of Disqus is that I have to check only one dashboard and instantly follow track of the conversations at >20 web sites. It's like Google Reader, just for comments.
The disadvantages that Disqus has are: no filtering, limited search options, infinite scroll, and freshly-crippled OpenID support (they deliberately removed OpenID from the frontend of the newest version, preventing me from accessing my account until I finally found a blog that still used the old version - this kind of behavior is egregious).
