http://rpc.pingomatic.com
http://rpc.twingly.com
http://api.feedster.com/ping
http://api.moreover.com/RPC2
http://api.moreover.com/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://api.nrelate.com/rpcpinghost/