I was wondering how to export my website comments into Disqus. It’s very easy to move all comments to Disqus because they already made a plugin to help WordPress users to move existing comments into their system. Before using Disqus WordPress Plugin, you need to sign up to disqus to get API (Application Programming Interface) Key.
If you already have Disqus API Key. You need to download Disqus Comment System plugin from WordPress plugin repository or direct download from your WordPress Admin interface. After installation, you’ll find Disqus Plugin menu under Comments section then you can start exporting existing comments to Disqus by pressing Export Comments. You could manage comments on Disqus inside WordPress Admin, they give an iframe interface to their site.
The good thing from Disqus Plugin is Sync Comments feature which allowing you to sync between Disqus and WordPress built-in comment system. So, in next feature you’re able to retrieve comments for a post. Another point that makes me want to use Disqus is their system could help me in combating spam comments.