How to Ping a Podcast
Extensible Markup Language (XML) is a set of rules for making documents machine readable or ready to be fed into a computer. Remote Procedure Call (RPC) is a way for a computer program to perform a subroutine on another computer automatically, without explicit instruction having been written into the code.
A podcast producer can ping internet servers, using XML-RPC, to inform the intended audience that that a new episode has been uploaded or that content has been updated.
Many online services are available that allow content owners to easily ping their podcasts by sending the name of the podcast and the podcast feed as strings of code. The return message would indicate whether or not the ping had succeeded.