My Ping List:
http://rpc.pingomatic.com
Pingomatic then pings the following services:
Weblogs.com
Blo.gs
Technorati
Feed Burner
Syndic8
NewsGator
Feedster
My Yahoo!
PubSub.com
Blogdigger
BlogRolling
BlogStreet
Moreover
Weblogalot
Icerocket
Notice one of those services is Feed Burner. Now using feed burner's ping shot the following services get pinged:
Technorati
My Yahoo
Bloglines
PubSub
Newsgator
icerocket
Weblogs.Com
Blogdigger
Syndic8
Google Blog Search Pinging Service
Notice there is a few duplicates but since feedburner doesn't make some of these optional I'm stuck with them. Besides most people use a ping list like ronnies so most people duplicate pings much more than I do.