After every post you make on your blog, wordpress will ping some online services telling them that you have made a new post (like ping o matic). So, users from these services will know that you updated your blog, and bringing you possible visitors
The default ping service that wordpress uses is not enough. So i gathered some ping services over the time and now i want to share with you them.
The services that im currently using are:
http://bitacoras.net/ping
http://www.a2b.cc/setloc/bp.
http://www.bitacoles.net/ping.php
http://blogbot.dk/io/xml-rpc.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.blogstreet.com/xrbin/xmlrpc.cgi
http://blog.goo.ne.jp/XMLRPC
http://bulkfeeds.net/rpc
http://www.catapings.com/ping.php
http://coreblog.org/ping/
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.amagle.com/
http://ping.bitacoras.com
http://ping.blo.gs/
http://ping.bloggers.jp/rpc/
http://ping.cocolog-nifty.com/xmlrpc
http://ping.exblog.jp/xmlrpc
http://ping.myblog.jp
http://ping.rootblog.com/rpc.php
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogs.se/
http://www.popdex.com/addsite.php
http://rpc.blogrolling.com/pinger/
http://rpc.technorati.com/ping
http://rpc.weblogs.com/RPC2
http://trackback.bakeinu.jp/bakeping.php
http://www.weblogues.com/RPC/
http://xmlrpc.blogg.de/
http://blogdb.jp/xmlrpc
http://ping.feedburner.com
http://rpc.pingomatic.com/
http://1470.net/api/ping
http://api.feedster.com/ping
http://api.moreover.com/RPC2
http://api.moreover.com/ping
http://api.my.yahoo.com/RPC2
http://api.my.yahoo.com/rss/ping
http://blogmatcher.com/u.php
http://www.blogsnow.com/ping
http://www.lasermemory.com/lsrpc/
http://ping.blogmura.jp/rpc/
http://ping.weblogalot.com/rpc.php
http://pingoat.com/goat/RPC2
http://rcs.datashed.net/RPC2/
http://rpc.icerocket.com:10080/
http://www.snipsnap.org/RPC2
http://topicexchange.com/RPC2
http://xping.pubsub.com/ping/Thanks to Steve for telling me about:
http://blogsearch.google.com/ping/RPC2
and thanks to Poker Guide for warning me about the duplicates
I have been using them for some time now, and haven’t got any problem. You can use all of them or choose your favourites.
There will be more ping services around at the distance of a simple google search 
Happy pinging!
