http://rpc.pingomatic.com/
http://rpc.technorati.com/rpc/ping
http://www.feedburner.com/fb/a/pingSubmit?bloglink=http%3A%2F%2www.YOURURLHERE.com/
http://blogsearch.google.com/ping/RPC2

BE SURE TO ADD YOUR URL IN THE “YOUURLHERE” FIELD OF THE THIRD LINK IN THE LIST.