In reply to Danny Brown.

Matter of opinion, I guess.
In terms of functionality, it's got everyone one might have wanted, and more.
The design was something that could have been fixed, like mobile devices compatibility.

But the advantages were many. Nowadays, not much more, it's sad.
And the other systems have their own problems. Disqus wants you to create an account and they do their best to keep the comments discussion in their own site pages rather than on the blog where it started, for instance.