Has anyone tackled importing default ExpressionEngine comments to Disqus? I found this on github but I'm not sure how to use it, or if it will work. http://gist.github.com/202802
I recently used this plugin in a pretty big site with a lot of comments:
http://devot-ee.com/add-ons/cx-disqus-comments
Costs some money, but it did the job, and it syncs back to EE FROM disqus, which can be good for SEO (because you can put your Disqus comments on the page without JS).