I'm pretty sure it has nothing to do with intense debate, considering Automattic(the company behind WordPress owns IntenseDebate). However, disqus would probabl

I'm pretty sure it has nothing to do with intense debate, considering Automattic(the company behind WordPress owns IntenseDebate). However, disqus would probably be a prime target. I think the issue is that if the services like Disqus goes away, you don't have the comments anymore either(I believe). With things like IntenseDebate and Backtype you still own the comments, as they are saved in your database with appropriate plugins. Also some talk about appropriate SEO, etc. but I haven't researched that.