Yep. Disqus is one of the more understandable shifts-to-bloat which developers have made in recent years. Understandable because spammers have made it so difficult to run our own comments. The selfish anti-social behaviour of this small minority of "SEO experts" ends up forcing everyone into tech choices we should otherwise be avoiding.
spot on. however, network trust issues are behind so many reasons why we can't have nice stuff...
naive initial approaches to network-sharing of resources + lots of papering over = 20+ years of broken web
