pontocinza

When a post is published or updated, Internal Pingback Comments scans its content, finds all internal links, and creates a pingback-style comment on each linked post. It mimics native WordPress pingback behavior but eliminates the need for XML-RPC or outbound network requests.
Works with posts only. No settings page, no configuration.
How it works
The plugin parses post content with DOMDocument — not regex — so it handles real-world HTML correctly: nested tags, encoded entities, relative and protocol-relative URLs. For each internal link found, it inserts a pingback comment on the target post. The comment includes a short excerpt from the source post, with image captions (figcaption) stripped so they do not bleed into the pingback text.
Duplicate detection is precise: the source permalink is stored as private comment meta, and the plugin queries that meta before every insert. Republishing or updating a post never creates duplicate comments. New links added to an existing post will generate their own pingbacks on the next save.
What the pingback looks like to your theme
The comment is stored with <code>comment_type = 'pingback'</code> and auto-approved. Your theme renders it exactly as it would render a native pingback. If your theme does not display pingbacks, the comment will be stored in the database but remain hidden on the front end.
<h3>Disclaimer</h3>
This plugin is provided “as is”, without warranty of any kind. While best efforts have been made to ensure reliability and security, the author is not liable for any damages or losses resulting from its use.

Internal Pingback Comments

Detects internal links in posts and automatically inserts a pingback-style comment on each linked post. No XML-RPC required.

Mark Jaquith

Kramer will add inbound links to a post on your weblog as pingbacks without the need for the author of the post on blog A to send a ping to blog B by using both Technorati and by monitoring incoming referrers.
What this means is that pingback, trackback and other post-pinging tools are no longer required, as all links to a post will be found and shown as pingbacks. To show links to the main weblog, or to other pages in general, a function called <code>kramer_inbound()</code> is provided. It can be used in WordPress templates to display a list of the latest inbound links to that page. It is usually included in the sidebar of a blog and can be fully configured via the Kramer administration interface.
<h3>Support and Updates</h3>
To debug your Kramer install, view the HTML source on any page, and scroll down to the bottom where Kramer produces its debug output as a HTML comment. Within the debug output any errors are reported, as well as a trace of the request to Technorati and any comment actions.
To submit a bug, feature request or support ticket fill in the ticket form found at:
<a href="http://dev.wp-plugins.org/newticket?component=kramer" rel="nofollow ugc">http://dev.wp-plugins.org/newticket?component=kramer</a>
<h3>Contributors</h3>
<ul>
<li>Nik Cubrilovic – original author</li>
<li>Mark Jaquith – current maintainer</li>
<li>Firas – testing, ideas</li>
<li>Kevin Marks – support from Technorati and ideas</li>
</ul>
<h3>License</h3>
Copyright 2005-2007 Nik Cubrilovic <a href="mailto:nik@nik.com.au" rel="nofollow ugc">nik@nik.com.au</a> and Mark Jaquith <a href="mailto:mark.gpl@txfx.net" rel="nofollow ugc">mark.gpl@txfx.net</a>
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation; either version 2 of the License, or 
(at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Kramer

Kramer will add inbound links to a post on your weblog as pingbacks by checking Technorati and by monitoring incoming referrers.

Internal Pingback Comments vs Kramer