You can use the ping list that I am using on my blog. Ping list has played a very big role in popularizing my blog over the internet in the past. I have got a very good PR at this point of time. Ping list is a service that is there in wordpress by default. It helps you promote your blog. All you need to do is just add this list in your wordpress ping list.

How to update your ping list

Go to Settings –> Writing –> Scroll Down –> Update Services

Copy Paste the above urls and save the changes in you Wordpress admin.

http://zing.zingfast.com
http://zhuaxia.com/rpc/server.php
http://xping.pubsub.com/ping/
http://xmlrpc.blogg.de
http://www.zhuaxia.com/rpc/server.php
http://www.xianguo.com/xmlrpc/ping.php
http://www.weblogues.com/RPC/
http://www.weblogues.com
http://www.snipsnap.org/RPC2
http://www.snipsnap.org
http://www.popdex.com/addsite.php
http://www.popdex.com
http://www.newsisfree.com/xmlrpctest.php
http://www.newsisfree.com/RPCCloud
http://www.mod-pubsub.org/ping.php
http://www.lasermemory.com
http://www.imblogs.net/ping/
http://www.holycowdude.com/rpc/ping/
http://www.feedsky.com/api/RPC2
http://www.catapings.com/ping.php
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://www.blogsnow.com/ping
http://www.blogshares.com/rpc.php
http://www.blogsdominicanos.com/ping/
http://www.blogroots.com
http://www.blogpeople.net
http://www.blogoon.net/ping/
http://www.blogoole.com/ping/
http://www.blogdigger.com/RPC2
http://www.bitacoles.net/ping.php
http://www.a2b.cc
http://weblogues.com/RPC/
http://weblogues.com/ping/
http://wasalive.com/ping/
http://trackback.bakeinu.jp/bakeping.php
http://topicexchange.com
http://thingamablog.sourceforge.net/ping.php
http://syndic8.com/xmlrpc.php
http://snipsnap.org/RPC2
http://signup.alerts.msn.com/alerts-PREP/submitPingExtended.doz
http://services.newsgator.com/ngws/xmlrpcping.aspx
http://rpc.wpkeys.com
http://rpc.weblogs.com/RPC2
http://rpc.twingly.com
http://rpc.technorati.jp/rpc/ping
http://rpc.technorati.com/rpc/ping
http://rpc.tailrank.com/feedburner/RPC2
http://rpc.reader.livedoor.com/ping
http://rpc.pingomatic.com
http://rpc.newsgator.com/
http://rpc.icerocket.com:10080
http://rpc.britblog.com/
http://rpc.blogrolling.com/pinger/
http://rpc.bloggerei.de/ping/
http://rpc.blogbuzzmachine.com/RPC2
http://rcs.datashed.net/RPC2/
http://rcs.datashed.net
http://r.hatena.ne.jp/rpc
http://popdex.com/addsite.php
http://pingqueue.com/rpc/
http://pingoat.com/goat/RPC2
http://pingoat.com/
http://pinger.blogflux.com/rpc
http://ping.wordblog.de/
http://ping.weblogs.se/
http://ping.syndic8.com/xmlrpc.php
http://ping.snap.com/ping/RPC2
http://ping.rootblog.com/rpc.php
http://ping.namaan.net/rpc
http://ping.myblog.jp
http://ping.kutsulog.net/
http://ping.feeds.yahoo.com/RPC2/
http://ping.feedburner.com
http://ping.fc2.com/
http://ping.fakapster.com/rpc
http://ping.exblog.jp/xmlrpc
http://ping.cocolog-nifty.com/xmlrpc
http://ping.blogs.yandex.ru/RPC2
http://ping.blogoon.net/
http://ping.blogmura.jp/rpc/
http://ping.bloggers.jp/rpc/
http://ping.blogg.de/
http://ping.blo.gs/
http://ping.bitacoras.com
http://ping.amagle.com/
http://packetmonster.net/xmlrpc.php
http://newsisfree.com/RPCCloud
http://newsblog.jungleboots.org/ping.php
http://mod-pubsub.org/ping.php
http://mod-pubsub.org
http://lasermemory.com/lsrpc/
http://imblogs.net/ping/
http://holycowdude.com/rpc/ping/
http://hamo-search.com/ping.php
http://fgiasson.com/pings/ping.php
http://feedsky.com/api/RPC2
http://effbot.org/rpc/ping.cgi
http://coreblog.org/ping/
http://catapings.com/ping.php
http://bulkfeeds.net
http://blogupdate.org/ping/
http://blogstreet.com/xrbin/xmlrpc.cgi
http://blogsnow.com/ping
http://blogshares.com/rpc.php
http://blogsearch.google.us/ping/RPC2
http://blogsearch.google.tw/ping/RPC2
http://blogsearch.google.sk/ping/RPC2
http://blogsearch.google.se/ping/RPC2
http://blogsearch.google.ru/ping/RPC2
http://blogsearch.google.ro/ping/RPC2
http://blogsearch.google.pt/ping/RPC2
http://blogsearch.google.pl/ping/RPC2
http://blogsearch.google.nl/ping/RPC2
http://blogsearch.google.lt/ping/RPC2
http://blogsearch.google.jp/ping/RPC2
http://blogsearch.google.it/ping/RPC2
http://blogsearch.google.in/ping/RPC2
http://blogsearch.google.ie/ping/RPC2
http://blogsearch.google.hr/ping/RPC2
http://blogsearch.google.gr/ping/RPC2
http://blogsearch.google.fr/ping/RPC2
http://blogsearch.google.fi/ping/RPC2
http://blogsearch.google.es/ping/RPC2
http://blogsearch.google.de/ping/RPC2
http://blogsearch.google.com.vn/ping/RPC2
http://blogsearch.google.com.uy/ping/RPC2
http://blogsearch.google.com.ua/ping/RPC2
http://blogsearch.google.com.tw/ping/RPC2
http://blogsearch.google.com.tr/ping/RPC2
http://blogsearch.google.com.sg/ping/RPC2
http://blogsearch.google.com.sa/ping/RPC2
http://blogsearch.google.com.pe/ping/RPC2
http://blogsearch.google.com.my/ping/RPC2
http://blogsearch.google.com.mx/ping/RPC2
http://blogsearch.google.com.do/ping/RPC2
http://blogsearch.google.com.co/ping/RPC2
http://blogsearch.google.com.br/ping/RPC2
http://blogsearch.google.com.au/ping/RPC2
http://blogsearch.google.com.ar/ping/RPC2
http://blogsearch.google.co.za/ping/RPC2
http://blogsearch.google.co.ve/ping/RPC2
http://blogsearch.google.co.uk/ping/RPC2
http://blogsearch.google.co.th/ping/RPC2
http://blogsearch.google.co.nz/ping/RPC2
http://blogsearch.google.co.ma/ping/RPC2
http://blogsearch.google.co.jp/ping/RPC2
http://blogsearch.google.co.it/ping/RPC2
http://blogsearch.google.co.in/ping/RPC2
http://blogsearch.google.co.il/ping/RPC2
http://blogsearch.google.co.id/ping/RPC2
http://blogsearch.google.co.hu/ping/RPC2
http://blogsearch.google.co.cr/ping/RPC2
http://blogsearch.google.cl/ping/RPC2
http://blogsearch.google.ch/ping/RPC2
http://blogsearch.google.ca/ping/RPC2
http://blogsearch.google.bg/ping/RPC2
http://blogsearch.google.be/ping/RPC2
http://blogsearch.google.at/ping/RPC2
http://blogsearch.google.ae/ping/RPC2
http://blogroots.com/tb_populi.blog?id=1
http://blogpeople.net/ping
http://blogoon.net/ping/
http://blogoole.com/ping/
http://blogmatcher.com/u.php
http://blogdigger.com/RPC2
http://blogdb.jp/xmlrpc
http://blogdb.jp
http://blogbot.dk/io/xml-rpc.php
http://blog.goo.ne.jp/XMLRPC
http://blog.goo.ne.jp
http://blo.gs/ping.php
http://bitacoras.net/ping/
http://bitacoles.net/ping.php
http://bitacoles.net/notificacio.php
http://bblog.comping.php
http://audiorpc.weblogs.com/RPC2
http://api.my.yahoo.com/rss/ping
http://api.my.yahoo.com/RPC2
http://api.my.yahoo.com/ping
http://api.my.yahoo.co.jp/RPC2
http://api.moreover.com/RPC2
http://api.moreover.com/ping
http://api.feedster.com/ping
http://a2b.cc/setloc/bp.a2b
http://1470.net/api/ping
http://www.a2b.cc/setloc/bp.a2b
http://bblog.com/ping.php
http://blogsearch.google.com/ping/RPC2
http://ping.weblogalot.com/rpc.php
http://ping.feedburner.com
http://rpc.pingomatic.com/
http://topicexchange.com/RPC2
http://www.blogpeople.net/servlet/weblogUpdates
http://rpc.pingomatic.com
http://api.feedster.com/ping
http://api.moreover.com/ping
http://api.my.yahoo.com/RPC2
http://api.my.yahoo.com/rss/ping
http://www.blogdigger.com/RPC2
http://www.blogshares.com/rpc.php
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://bulkfeeds.net/rpc
http://www.newsisfree.com/xmlrpctest.php
http://ping.blo.gs/
http://ping.feedburner.com
http://rpc.blogrolling.com/pinger/
http://www.azfeeds.com
http://www.blogsearchengine.com
http://www.blogtopsites.com
http://www.feedbase.net
http://www.feedsubmitter.com
http://www.fybersearch.com
http://www.plazoo.com
http://www.readablog.com
http://www.rssfeeds.com
http://www.rssmad.com
http://www.rss-spider.com
http://blo.gs/ping.php
http://www.pingerati.net
http://feedshark.brainbliss.com
http://www.pingmyblog.com
http://geourl.org/ping
http://ipings.com
http://www.icerocket.com
http://www.weblogalot.com/ping
http://ping.feedburner.com