For Wordpress, the default ping list consists of pingomatic. This site will also ping other blog directories. In fact, there are several sites that ping multiple directories and some of these directories are duplicated in the process. What this means is that if you have ping sites on your list that ping some of the same directories, then you will end up pinging these directories more than once. This can be considered ping spam and may get your URL banned by these ping services. Here is a clean list to prevent this from occuring:

http://rpc.pingomatic.com
http://ping.weblogs.se/
http://blogmatcher.com/u.php
http://coreblog.org/ping/
http://www.blogpeople.net/servlet/weblogUpdates
http://bulkfeeds.net/rpc
http://trackback.bakeinu.jp/bakeping.php
http://ping.myblog.jp
http://ping.bitacoras.com
http://ping.bloggers.jp/rpc/
http://ping.blogmura.jp/rpc/
http://xmlrpc.blogg.de
http://1470.net/api/ping
http://bblog.com/ping.php
http://blog.goo.ne.jp/XMLRPC

You can read more about how this list was derived at http://www.instant-info-online.com/wordpress-compressed-all-inclusive-ping-list.html

 Email this post to a friend