Here is a decent ping list for your wordpress blogs, it’s what I personally use for my wordpress blogs.

 

zing.zingfast.com

zhuaxia.com/rpc/server.php

xping.pubsub.com/ping/

xmlrpc.blogg.de

www.zhuaxia.com/rpc/server.php

www.xianguo.com/xmlrpc/ping.php

www.weblogues.com/RPC/

www.weblogues.com

www.snipsnap.org/RPC2

www.snipsnap.org

www.popdex.com/addsite.php

www.popdex.com

www.newsisfree.com/xmlrpctest.php

www.newsisfree.com/RPCCloud

www.mod-pubsub.org/ping.php

www.lasermemory.com

www.imblogs.net/ping/

www.holycowdude.com/rpc/ping/

www.feedsky.com/api/RPC2

www.catapings.com/ping.php

www.blogstreet.com/xrbin/xmlrpc.cgi

www.blogsnow.com/ping

www.blogshares.com/rpc.php

www.blogsdominicanos.com/ping/

www.blogroots.com

www.blogpeople.net

www.blogoon.net/ping/

www.blogoole.com/ping/

www.blogdigger.com/RPC2

www.bitacoles.net/ping.php

www.a2b.cc

weblogues.com/RPC/

weblogues.com/ping/

wasalive.com/ping/

trackback.bakeinu.jp/bakeping.php

topicexchange.com

thingamablog.sourceforge.net/ping.php

syndic8.com/xmlrpc.php

snipsnap.org/RPC2

signup.alerts.msn.com/alerts-PREP/submitPingExtended.doz

services.newsgator.com/ngws/xmlrpcping.aspx

rpc.wpkeys.com

rpc.weblogs.com/RPC2

rpc.twingly.com

rpc.technorati.jp/rpc/ping

rpc.technorati.com/rpc/ping

rpc.tailrank.com/feedburner/RPC2

rpc.reader.livedoor.com/ping

rpc.pingomatic.com

rpc.newsgator.com/

rpc.icerocket.com:10080

rpc.britblog.com/

rpc.blogrolling.com/pinger/

rpc.bloggerei.de/ping/

rpc.blogbuzzmachine.com/RPC2

rcs.datashed.net/RPC2/

rcs.datashed.net

r.hatena.ne.jp/rpc

popdex.com/addsite.php

pingqueue.com/rpc/

pingoat.com/goat/RPC2

pingoat.com/

pinger.blogflux.com/rpc

ping.wordblog.de/

ping.weblogs.se/

ping.weblogalot.com/rpc.php

ping.syndic8.com/xmlrpc.php

ping.snap.com/ping/RPC2

ping.rootblog.com/rpc.php

ping.namaan.net/rpc

ping.myblog.jp

ping.kutsulog.net/

ping.feeds.yahoo.com/RPC2/

ping.feedburner.com

ping.fc2.com/

ping.fakapster.com/rpc

ping.exblog.jp/xmlrpc

ping.cocolog-nifty.com/xmlrpc

ping.blogs.yandex.ru/RPC2

ping.blogoon.net/

ping.blogmura.jp/rpc/

ping.bloggers.jp/rpc/

ping.blogg.de/

ping.blo.gs/

ping.bitacoras.com

ping.amagle.com/

packetmonster.net/xmlrpc.php

newsisfree.com/RPCCloud

newsblog.jungleboots.org/ping.php

mod-pubsub.org/ping.php

mod-pubsub.org

lasermemory.com/lsrpc/

imblogs.net/ping/

holycowdude.com/rpc/ping/

hamo-search.com/ping.php

fgiasson.com/pings/ping.php

feedsky.com/api/RPC2

effbot.org/rpc/ping.cgi

coreblog.org/ping/

catapings.com/ping.php

bulkfeeds.net

blogupdate.org/ping/

blogstreet.com/xrbin/xmlrpc.cgi

blogsnow.com/ping

blogshares.com/rpc.php

blogsearch.google.us/ping/RPC2

blogsearch.google.tw/ping/RPC2

blogsearch.google.sk/ping/RPC2

blogsearch.google.se/ping/RPC2

blogsearch.google.ru/ping/RPC2

blogsearch.google.ro/ping/RPC2

blogsearch.google.pt/ping/RPC2

blogsearch.google.pl/ping/RPC2

blogsearch.google.nl/ping/RPC2

blogsearch.google.lt/ping/RPC2

blogsearch.google.jp/ping/RPC2

blogsearch.google.it/ping/RPC2

blogsearch.google.in/ping/RPC2

blogsearch.google.ie/ping/RPC2

blogsearch.google.hr/ping/RPC2

blogsearch.google.gr/ping/RPC2

blogsearch.google.fr/ping/RPC2

blogsearch.google.fi/ping/RPC2

blogsearch.google.es/ping/RPC2

blogsearch.google.de/ping/RPC2

blogsearch.google.com/ping/RPC2

blogsearch.google.com.vn/ping/RPC2

blogsearch.google.com.uy/ping/RPC2

blogsearch.google.com.ua/ping/RPC2

blogsearch.google.com.tw/ping/RPC2

blogsearch.google.com.tr/ping/RPC2

blogsearch.google.com.sg/ping/RPC2

blogsearch.google.com.sa/ping/RPC2

blogsearch.google.com.pe/ping/RPC2

blogsearch.google.com.my/ping/RPC2

blogsearch.google.com.mx/ping/RPC2

blogsearch.google.com.do/ping/RPC2

blogsearch.google.com.co/ping/RPC2

blogsearch.google.com.br/ping/RPC2

blogsearch.google.com.au/ping/RPC2

blogsearch.google.com.ar/ping/RPC2

blogsearch.google.co.za/ping/RPC2

blogsearch.google.co.ve/ping/RPC2

blogsearch.google.co.uk/ping/RPC2

blogsearch.google.co.th/ping/RPC2

blogsearch.google.co.nz/ping/RPC2

blogsearch.google.co.ma/ping/RPC2

blogsearch.google.co.jp/ping/RPC2

blogsearch.google.co.it/ping/RPC2

blogsearch.google.co.in/ping/RPC2

blogsearch.google.co.il/ping/RPC2

blogsearch.google.co.id/ping/RPC2

blogsearch.google.co.hu/ping/RPC2

blogsearch.google.co.cr/ping/RPC2

blogsearch.google.cl/ping/RPC2

blogsearch.google.ch/ping/RPC2

blogsearch.google.ca/ping/RPC2

blogsearch.google.bg/ping/RPC2

blogsearch.google.be/ping/RPC2

blogsearch.google.at/ping/RPC2

blogsearch.google.ae/ping/RPC2

blogroots.com/tb_populi.blog?id=1

blogpeople.net/ping

blogoon.net/ping/

blogoole.com/ping/

blogmatcher.com/u.php

blogdigger.com/RPC2

blogdb.jp/xmlrpc

blogdb.jp

blogbot.dk/io/xml-rpc.php

blog.goo.ne.jp/XMLRPC

blog.goo.ne.jp

blo.gs/ping.php

bitacoras.net/ping/

bitacoles.net/ping.php

bitacoles.net/notificacio.php

bblog.comping.php

bblog.com/ping.php

audiorpc.weblogs.com/RPC2

api.my.yahoo.com/rss/ping

api.my.yahoo.com/RPC2

api.my.yahoo.com/ping

api.my.yahoo.co.jp/RPC2

api.moreover.com/RPC2

api.moreover.com/ping

api.feedster.com/ping

a2b.cc/setloc/bp.a2b

1470.net/api/ping

www.a2b.cc/setloc/bp.a2b