You may browse the instructions, but you will need to register your site before installing.1)
To install Disqus on DokuWiki:
From your DokuWiki Admin head over to Manage Plugins.
Copy and paste the plugin download link from this page in the field
URL.
Head over to Admin > Configuration Settings > Disqus Plugin Settings under Table of Contents. Enter your Shortname.
In your wiki, add ~ ~ DISQUS ~ ~ where you would like Disqus Comments to appear.
吃書：先到後台下載，直接搜尋後安插插件。然後進入後台，輸入「shortname」。接下來只要在寫文章時輸入「~ ~ DISQUS ~ ~ 」就大功告成啦。不過，這「shortname」到底是什麼。
DISQUS 整合性留言管理系統 (支援 WordPress、Blogger)2)
2017/02/02更新： 今天開始出現廣告並且無法關閉廣告，目前已暫時不使用此套件。
網站名稱：DISQUS
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外掛下載：WordPress專用