If you are referring to a site that you installed wordpress on, it is setup to automatically ping every time you publish or update a post. If you look at your dashboard, go down to the "settings" tab, and then click writing. At the bottom of that page you will see "update services" and a box. There will be one service in there. For myself, as well as many other marketers, we insert a list of these services into the box. If you will do a google search related to "wordpress ping list", just find a fairly recent one, copy and paste it into the box. Wordpress will automatically ping them every time you post, as long as you don't have the search engines blocked. Hope this helps.

Thats a nice list . Thanks for it .