WordPress ping service如下：
http://blogsearch.google.com/ping/RPC2 (google的，很好用)
http://www.feedsky.com/api/RPC2 (国内的,与feedburner提供相同的服务)
http://ping.blog.qikoo.com/rpc2.php (国内的奇虎博客搜索)
http://www.xianguo.com/xmlrpc/ping.php(鲜果都知道吧)
http://api.my.yahoo.com/RPC2
http://ping.feedburner.com
http://rpc.blogrolling.com/pinger/
http://rpc.weblogs.com/RPC2
http://api.moreover.com/RPC2
http://api.my.yahoo.com/RPC2
http://bblog.com/ping.php
http://bulkfeeds.net/rpc
http://ping.bitacoras.com
http://ping.bloggers.jp/rpc/
http://ping.blogmura.jp/rpc/
http://ping.myblog.jp
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogalot.com/rpc.php
http://pinger.blogflux.com/rpc/
http://rpc.blogbuzzmachine.com/RPC2
http://rpc.blogrolling.com/pinger/
http://rpc.pingomatic.com/
http://rpc.tailrank.com/feedburner/RPC2
http://rpc.technorati.com/rpc/ping
http://rpc.weblogs.com/RPC2
http://services.newsgator.com/ngws/xmlrpcping.aspx
http://topicexchange.com/RPC2
http://www.blogdigger.com/RPC2
http://www.blogoon.net/ping/
http://www.blogpeople.net/servlet/weblogUpdates
http://www.holycowdude.com/rpc/ping/
有一些ping service还会把自己接受到的再发送到其他ping服务器,some ping service broadcasters(that ping out to other ping servers).所以选几个服务稳定的ping service就可以了。关于为什么需要ping service ，以及如何使用，请看鲜果日志。
