http://blogsearch.google.com/ping/RPC2
http://api.moreover.com/RPC2
http://ping.feedburner.com/rpc.php
http://ping.feeds.yahoo.com/RPC2
http://ping.syndic8.com/xmlrpc.php
http://rpc.blogrolling.com:80/pinger/ 
http://rpc.tailrank.com/feedburner/RPC2
http://rpc.technorati.com/rpc/ping
http://rpc.weblogs.com/RPC2
http://www.blogpeople.net/servlet/weblogUpdates
http://rpc.icerocket.com:10080/