This is a comprehensive list of the ping services available to automatically notify blog directories and search engines about the updates to your blog. Following are the 69 ping services which increases the chances of receiving traffic from those sources. WordPress users can modify their ping list on the Control Panel>Options>Writing.

http://1470.net/api/ping
http://api.feedster.com/ping
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://blog.goo.ne.jp/XMLRPC
http://blogdb.jp/xmlrpc
http://blogmatcher.com/u.php
http://blogsearch.google.com/ping/RPC2
http://bulkfeeds.net/rpc
http://coreblog.org/ping/
http://mod-pubsub.org/kn_apps/blogchatt
http://ping.amagle.com/
http://ping.bitacoras.com
http://ping.blo.gs/
http://ping.blogg.de/
http://ping.bloggers.jp/rpc/
http://ping.blogmura.jp/rpc/
http://ping.cocolog-nifty.com/xmlrpc
http://ping.exblog.jp/xmlrpc
http://ping.feedburner.com
http://ping.myblog.jp
http://ping.rootblog.com/rpc.php
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogalot.com/rpc.php
http://ping.weblogs.se/
http://pinger.blogflux.com/rpc/
http://pingoat.com/goat/RPC2
http://pingqueue.com/rpc/
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.imblogs.net/ping/
http://www.lasermemory.com/lsrpc/
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
http://xping.pubsub.com/ping/
https://phobos.apple.com/WebObjects/MZFinance.woa/wa/pingPodcast