I've never messed with disqus before, but I figured since everyone talks about what good integration it has with octopress that I'd give it a shot.
It took all of 5 minutes to add, including the time to regenerate the site. I registered at disqus, edited my config to include the special name or whatever disqus calls it, regenerated the site, and boom! Comments. Not that I expect anyone to leave comments, of course.
Also, I wanted to try cloudflare too, as I've heard good things and I was curious what kind of analytical information they'd provide. I was also curious about what sort of malicious traffic I might see at omfgoggles.net, my old url, as I was constantly having hosts bang on the door (when it was a WordPress site, I had a ton of additional security that detected brute force attempts and the like). It takes 24ish hours for it to generate stats, so I'm anxious to see how that turns out.
As an aside, I'm a little hesitant to allow cloudfire to manage my authoritative dns, as I don't know whether it's reliable. I'd imagine it's alright, but probably not as alright as my paid provider, amazon aws. Route 53 is a good deal if you have a lot of sites that need authoritative dns.