The author says he wants to switch Disqus to Commento but I wouldn't just do that. I didn't have a great experience with Commento. I like the idea and mostly the execution of it (including the OAuth) but I found some major bugs (Firefox just didn't work at the time) and I didn't get any response to reporting those. I asked a few more questions by mail and also no response. After that I'm gone pretty quick.
Not that I'm saying you should use Disqus since they have some privacy issues
I was excited for Commento and signed up for a paid plan. I even contributed code.[0] The author sent me an onboarding email which included the line, "please reply to this email (I'm a real person)." I replied with some questions about the service and billing, but he never responded. Four months later, nobody has responded to my merge request, either.
Not that I'm saying you should use Disqus since they have some privacy issues