By default Movable Type pings blo.gs, weblogs.com and technorati.com, but in the configuration page I just added more URLs, to ping more services. And I'm going to look at my apache log to see what happens :)
http://api.feedster.com/ping http://api.my.yahoo.com/RPC2 http://www.bitacoles.net/ping.php http://blogdb.jp/xmlrpc http://www.blogdigger.com/RPC2 http://www.blogpeople.net/servlet/weblogUpdates http://www.blogshares.com/rpc.php http://www.blogsnow.com/ping http://blog.goo.ne.jp/XMLRPC http://bulkfeeds.net/rpc http://ping.bitacoras.com/ http://ping.bloggers.jp/rpc/ http://ping.feedburner.com/ http://ping.rootblog.com/rpc.php http://ping.syndic8.com/xmlrpc.php http://rpc.blogrolling.com/pinger/ http://rpc.pingomatic.com/ http://topicexchange.com/RPC2 http://xping.pubsub.com/ping/ http://xmlrpc.blogg.de/
More complete lists can be found here :
