There is a great featured in wordpress blog called “Update Service” or “Ping Service“. Update Service, mainly alter a lot of blog directory, article directory and many others social networking site when your blog update. This is very useful tools when you publish or edit a post, it will be reach to a millions of web users worldwide much faster than any search engine.
WordPress use Ping-O-Matic by default which is a very reliable service. In most case it is very good. But now a days many article directory and social media are growing very fast. So it is most important to add others ping service to get more traffic. For adding several ping service go to Settings->Writing->Update Services section in your WordPress admin panel and the add add your desire ping services separately.
The following are some of the services that I have added to my WordPress ping list. Hope this list helps you to get more traffic and visitor. Cool! blogging.