Hm. I've had an issue with commenting here for a while, and since this seems to be the post about the comments, I might as well talk about it here: I don't like Disqus.
I don't like Disqus, both as a commenter and as a blogger. As a blogger, it takes the comments, which are the more interesting and exciting part of a blog, away from your (the blogger's) control and puts them into the hands of a third party. By doing that, you're locking yourself in with that third party, because switching *back* to your own comment system is almost impossible, and certainly puts you at risk of losing all the comments that were posted to Disqus. What if something better comes along? What if you want more control over the look, behaviour or features of your comment section? With Disqus you get what Disqus offers. With your own comment section, you got everything wordpress, the plugin coders and the WWW offers.
As a commenter, I loathe creating accounts, just to be able to comment somewhere. I believe something should be as easy as possible to make participation straightforward and unencumbered. With Disqus, I have to sign up to a third party who not only accumulates all my comments from multiple blogs I comment on, but also tracks me across the web as yet another tracking service that doesn't serve my interests, but the ones who want to and know how to abuse that kind of data. I've got several measures in place to make tracking me harder, but honestly, I don't think I should. I think as a blogger, I should make sure that my readers (the ones I write for, after all) aren't exploited by third parties or being put at risk or even harm.
So, my one suggestion would be: Get rid of Disqus and switch back to the wordpress comments. Then, let's talk about how to best do them.