Some people really like that WordPress sends pings from your own site to your own site when you write posts; it lets them easily leave a trail of related posts.
Some people do not like this behavior; it clutters up their comments.

So here’s a plugin to disable self pinging. I couldn’t find any prior art, but if you know of any other plugins that do this, please let me know.

Download the plugin, put it in your WordPress plugins directory, activate it via your WordPress admin panel, and you’re set. No configuration necessary.

The Article from:http://blogwaffe.com/2006/10/04/421/