Tip #9 : Use trackback auto-discovery
Posted by Leonid Mamchenkov on December 18, 2007
When building WordPress themes from scratch it is easy to forget about things that “just work”. One of such things, often forgotten by newcomers to WordPress theme development, is trackback auto-discovery – a really tiny bit of code, which is not visible to a naked eye (an eye without HTML source that is). Trackback auto-discovery provides a specially formatted HTML code for other content management systems to find a trackback URL in your post. Gladly, there is a Codex page that covers trackback_rdf() function.