How to setup XML-RPS Ping Services in WordPress?

What is RPC? RPC is Remote Procedure Call.

RPC Update Services are tools that you can use to let people know that you have updated your WordPress blog. WordPress automatically notifies popular Update Services that you have updated your blog by sending a XML-RPC ping each time you create or update a post.

In turn these Update Services process the ping and updates their proprietary indices with your updates. When people browse sites like Sphere or Technorati they can find all your recent posts. There are many other services other than the default provided by WordPress.

Copy and paste the below in your WordPress. Click on Setting -> Writing and scroll down to Update Services at the bottom. Erase all existing entries and copy the below and Save Changes.