Copy this list and paste it in the Writing section of the Settings portion of your WordPress back office:
http://rpc.pingomatic.com/
http://api.feedster.com/ping
http://ping.amagle.com/
http://ping.bitacoras.com
http://ping.blo.gs/
http://ping.rootblog.com/rpc.php
http://ping.weblogalot.com/rpc.php
http://rcs.datashed.net/RPC2/
http://rpc.blogbuzzmachine.com/RPC2
http://rpc.blogrolling.com/pinger/
http://rpc.icerocket.com:10080/
http://rpc.weblogs.com/RPC2
http://topicexchange.com/RPC2
http://www.blogoole.com/ping/
http://www.blogoon.net/ping/
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://www.lasermemory.com/lsrpc/
http://www.newsisfree.com/RPCCloud
http://www.popdex.com/addsite.php
http://www.snipsnap.org/RPC2
http://www.wasalive.com/ping/
http://www.blogsdominicanos.com/ping/
http://www.xianguo.com/xmlrpc/ping.php
http://www.feedsky.com/api/RPC2
http://rpc.technorati.com/rpc/ping
http://api.moreover.com/RPC2
http://bblog.com/ping.php
http://blogsearch.google.com/ping/RPC2
http://ping.feedburner.com
http://ping.syndic8.com/xmlrpc.php
http://ping.bloggers.jp/rpc/
http://rpc.pingomatic.com/
http://rpc.technorati.com/rpc/ping
http://www.blogpeople.net/servlet/weblogUpdates
http://xping.pubsub.com/ping
http://rpc.odiogo.com/ping/

