Simplemente hay que ir a options->writing y copiar esta lista de servicios:
http://blogsearch.google.com/ping/RPC2
http://1470.net/api/ping
http://api.feedster.com/ping
http://api.feedster.com/ping.php
http://api.moreover.com/ping
http://api.moreover.com/RPC2
http://api.my.yahoo.com/RPC2
http://api.my.yahoo.com/rss/ping
http://bblog.com/ping.php
http://bitacoras.net/ping
http://blogdb.jp/xmlrpc
http://blog.goo.ne.jp/XMLRPC
http://blogsearch.google.com/ping/RPC2
http://blogmatcher.com/u.php
http://bulkfeeds.net/rpc
http://coreblog.org/ping/
http://mod-pubsub.org/kn_apps/blogchatt
https://phobos.apple.com/WebObjects/MZFinance.woa/wa/pingPodcast
http://ping.amagle.com/
http://ping.bitacoras.com
http://ping.bloggers.jp/rpc/
http://ping.blogmura.jp/rpc/
http://ping.blo.gs/
http://ping.cocolog-nifty.com/xmlrpc
http://pinger.blogflux.com/rpc/
http://ping.exblog.jp/xmlrpc
http://ping.feedburner.com
http://ping.myblog.jp
http://pingqueue.com/rpc/
http://ping.blogg.de/
http://ping.rootblog.com/rpc.php
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogalot.com/rpc.php
http://ping.weblogs.se/
http://rcs.datashed.net/RPC2/
http://rpc.blogbuzzmachine.com/RPC2
http://rpc.blogrolling.com/pinger/
http://rpc.britblog.com/
http://rpc.icerocket.com:10080/
http://rpc.newsgator.com/
http://rpc.pingomatic.com/
http://rpc.tailrank.com/feedburner/RPC2
http://rpc.technorati.com/rpc/ping
http://rpc.weblogs.com/RPC2
http://rpc.wpkeys.com/
http://services.newsgator.com/ngws/xmlrpcping.aspx
http://signup.alerts.msn.com/alerts-PREP/submitPingExtended.doz
http://topicexchange.com/RPC2
http://trackback.bakeinu.jp/bakeping.php
http://www.a2b.cc/setloc/bp.a2b
http://www.bitacoles.net/ping.php
http://www.blogdigger.com/RPC2
http://www.blogoole.com/ping/
http://www.blogoon.net/ping/
http://www.blogpeople.net/servlet/weblogUpdates
http://www.blogroots.com/tb_populi.blog?id=1
http://www.blogshares.com/rpc.php
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://www.holycowdude.com/rpc/ping/
http://www.lasermemory.com/lsrpc/
http://www.imblogs.net/ping/
http://www.mod-pubsub.org/kn_apps/blogchatter/ping.php
http://www.newsisfree.com/RPCCloud
http://www.newsisfree.com/xmlrpctest.php
http://www.popdex.com/addsite.php
http://www.snipsnap.org/RPC2
http://www.weblogues.com/RPC/
http://xmlrpc.blogg.de
A partir de ahora se notificará cada nuevo post que escribamos a toda esta lista de redes sociales.
El autor también advierte que después de publicar un post, nuestro WordPress quedará un rato inutilizable, ya que tendrá que hacer muchos pings, lo que saturará la maquina.
Para evitar esto, el autor aconseja la instalación del plugin de WordPress No Ping Wait.