WordPress by default is set up with only one ping service. But you can add more to increase your chances of extra traffic. In my convoluted internet wanderings while searching on various WordPress plugins I came across the WordPress Ping Blogging List from Breeze Media. The list and the instructions on how to use it can be found on their website. It is a good tip that will help a lot with SEO.
As a footnote, I’ve now found an more extensive XML-RPC list of sites on OptimizeYourWeb.net.
