Here is a Big wordpress ping list which will ping all these websites when you make a post in your wordpress based blogs.
Add a comment if you think i have missed any.
http://xmlrpc.blogg.de/
http://api.moreover.com/RPC2
http://www.a2b.cc
http://api.feedster.com/ping
http://api.my.yahoo.com
http://api.my.yahoo.com/ping
http://api.my.yahoo.com/RPC2
http://bblog.comping.php
http://www.bitacoles.net/ping.php
http://blogbot.dk
http://blogdb.jp
http://www.blogdigger.com
http://blogmatcher.com
http://www.blogpeople.net
http://www.blogroots.com
http://www.blogshares.com
http://www.blogsnow.com/ping
http://www.blogstreet.com
http://blog.goo.ne.jp
http://bulkfeeds.net
http://coreblog.org/ping/
http://www.lasermemory.com
http://mod-pubsub.org
http://www.mod-pubsub.org/ping.php
http://www.newsisfree.com
http://ping.blo.gs
http://ping.bloggers.jp/rpc/
http://ping.cocolog-nifty.com/xmlrpc
http://ping.feedburner.com
http://ping.rootblog.com/rpc.php
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogs.se/
http://www.popdex.com
http://rcs.datashed.net
http://rpc.blogrolling.com/pinger/
http://rpc.pingomatic.com
http://rpc.technorati.com/rpc/ping
http://rpc.weblogs.com/RPC2
http://www.snipsnap.org
http://thingamablog.sourceforge.net/ping.php
http://topicexchange.com
http://www.weblogues.com
http://xping.pubsub.com/ping/
http://xmlrpc.blogg.de
http://rpc.pingomatic.com/
http://www.a2b.cc/setloc/bp.a2b
http://api.my.yahoo.com/rss/ping
http://bitacoras.net/ping
http://blogbot.dk/io/xml-rpc.php
http://blogdb.jp/xmlrpc
http://www.blogdigger.com/RPC2
http://blogmatcher.com/u.php
http://www.blogpeople.net/servlet/weblogUpdates
http://www.blogroots.com/tb_populi.blog?id=1
http://www.blogshares.com/rpc.php
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://blog.goo.ne.jp/XMLRPC
http://bulkfeeds.net/rpc
http://www.lasermemory.com/lsrpc/
http://mod-pubsub.org/kn_apps/blogchatt
http://www.mod-pubsub.org/kn_apps/blogchatter/ping.php
http://www.newsisfree.com/xmlrpctest.php
http://ping.bitacoras.com
http://www.popdex.com/addsite.php
http://rcs.datashed.net/RPC2
http://www.snipsnap.org/RPC2
http://topicexchange.com/RPC2
http://www.weblogues.com/RPC/
http://xmlrpc.blogg.de/
http://1470.net/api/ping
http://api.moreover.com/ping
http://www.blogoole.com/ping/
http://www.blogoon.net/ping/
http://ping.amagle.com/
http://ping.blogmura.jp/rpc/
http://ping.exblog.jp/xmlrpc
http://ping.myblog.jp
http://ping.weblogalot.com/rpc.php
http://rcs.datashed.net/RPC2/
http://trackback.bakeinu.jp/bakeping.php
http://ping.blo.gs/

May 30th, 2007 at 9:58 am
Well done AMIT….. U really ROCKK!!!! I appreciate ur patience for collecting all these & publishing here… Keep posting…. Best of Luck… & I think U have covered all… CHEERS…
May 31st, 2007 at 5:08 pm
Man..
Just to add here, you have included pingomatic.com which already ping many services for you. But you included them also.. eg. technorati, yahoo so .. it means you will actually do double ping for single post. ..
Hope you got the point.. either remove pingomatic or make sure you are not listing those services which pingomatic pings for you!
May 31st, 2007 at 5:09 pm
But i have been using this list from a long time and have never seen any penalty from this.
June 3rd, 2007 at 5:25 am
Nice list!!!
November 7th, 2007 at 4:41 pm
the list is too big for me and chances r there that you end up pinging one site many times n getting banned b’coz multi pinger sites like pingomatic.com automatically ping many other sites in d list. U may delete that from list
November 15th, 2007 at 7:11 am
thats great list… i bookmarked this page and will use it soon for my blog… Thanx
April 6th, 2008 at 1:05 pm
WKfhQ4 Hi! Nice site! Where is a add to favorite button&
http://www.mysite.com
June 23rd, 2008 (2 weeks ago) at 6:07 am
Can you add this xmlrpc url to the list? I’ve tested it and it definitely works with wordpress.
http://blogping.unidatum.com/RPC2/