I was quite amazed at the number of trackers listed. But on my own blog, where Disqus is used, I never see most of them. The only domains loaded are from disqus or Google Analytics.
Interesting, Domains like connect.facebook.net or rc.rlcdn.com don't show up in the Chromium network connection list, even in an anonymous session (so that all extensions are disabled).
Found this: https://blog.disqus.com/protecting-users-privacy-on-disqus My browser didn't send a DNT header with the request though. The blogpost seems to be a bit of a joke when comparing it to the list of trackers reported by pingdom.