You started a blog because you want people to read what you post, right? One way to get readers, in the crowded blogosphere, is to ping an update service—a central place that keeps a list of recently updated blogs. When you post a new entry to your blog, you ping (or tell) the update service that you posted something, and the service duly notes it. When someone asks that service for recently updated posts, it returns a link to your new post, along with other recently posted entries.
You can find lots of update services out there, which has led Automattic (the company that runs WordPress.com, made up of many of the people behind WordPress itself) to create Ping-o-Matic. Ping-o-Matic is a central update service that updates the other update services (whoa—meta!). WordPress ships configured to tell Ping-o-Matic whenever you post something, and the service then informs a host of other update services.
You can remove Ping-o-Matic simply by deleting that entry in the Update Services section (Figure 5.17), or you can add another update service by pasting the proper URL into the text box. (The update service you're adding should have documentation that includes the proper URL to enter.) Be sure to separate URLs with line breaks by pressing Enter or Return after each URL.
When you publish a new post, WordPress automatically notifies the following site update services. For more about this, see Update Services on the Codex. Separate multiple service URLs with line breaks.
Figure 5.17 The update service you list here tells people when your blog has been updated.
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