title: Unobtrusive, self-hosted comments function to put onto existing web pages
body: <p>I am building a new site which will consist of a mix of dynamic and static pages.</p>
  <p>I would like to <strong>add commenting functionality</strong> to those pages with <strong>as little work as possible</strong>. I'm curious as to whether such a solution exists in PHP.</p>
  <p>The ideal set of features would be:</p>
  <ul>
  <li>Completely independent from the surrounding page / site: PHP code gets dropped into page, a page ID is added, done.</li>
  <li>Simple &quot;write a comment&quot; form</li>
  <li>Comments for each page are displayed using a PHP function</li>
  <li>Nice, clean output of <code>&lt;ul&gt;&lt;li&gt;....</code> that can be styled by the surrounding site</li>
  <li>Optional Captcha</li>
  <li>Optional Gravatar sensitivity</li>
  <li>Minimalistic administration area to moderate/delete comments, no ACL, can protect it using .htaccess</li>
  </ul>
  <p>The ideal integreation would be like this:</p>
  <pre><code>&lt;?php show_comments(&quot;my_page_name&quot;); ?&gt;
  </code></pre>
  <p>this would 1. display a form to add a new comment that gets automatically associtated with <code>my_page_name</code>; and 2. display all comments that were made through this form using this ID.</p>
  <p>Does anybody know a solution like this?</p>
  <blockquote>
  <p><strong>Bounty</strong></p>
  <p>I am setting up a bounty because while there were some good suggestions, they all point to external services. I'm really curious to see whether there isn't anything self-hosted around.
  If this doesn't exist yet, it sure would be great to see as an Open Source project.</p>
  </blockquote>