http://rpc.pingomatic.com/
http://blogsearch.google.com/ping/RPC2
http://api.my.yahoo.com/rss/ping
http://ping.feedburner.com
http://www.blogoole.com/ping/
http://www.popdex.com/addsite.php
http://www.wasalive.com/ping/
http://www.weblogues.com/RPC/