http://ping.freeblogranking.com/xmlrpc/
http://pingoo.jp/ping/
http://ping.feedburner.com/
http://rpc.pingomatic.com/
http://ping.bloggers.jp/rpc/
http://blog.with2.net/ping.php/ 
http://ping.blo.gs
http://www.blogpeople.net/servlet/weblogUpdates