If you are using WordPress, get new posts to as many sources as possible.  Don't forget to add more update services.  Then, all new posts are submitted to the ping services in the list.  To do this, go to Settings -->  Writing.  Scroll down to the bottom, and you'll see a field for 'Update Services' - here's a few (below) to get you started:

update services

List of Ping services:

http://rpc.pingomatic.com
http://rpc.twingly.com
http://api.feedster.com/ping
http://api.moreover.com/RPC2
http://api.moreover.com/ping
http://www.blogdigger.com/RPC2
http://www.blogshares.com/rpc.php
http://www.blogsnow.com/ping
http://www.blogstreet.com/xrbin/xmlrpc.cgi
http://bulkfeeds.net/rpc
http://www.newsisfree.com/xmlrpctest.php
http://ping.blo.gs/
http://ping.feedburner.com
http://ping.syndic8.com/xmlrpc.php
http://rpc.weblogs.com/RPC2
http://www.feedsubmitter.com
http://blo.gs/ping.php
http://www.pingerati.net
http://www.pingmyblog.com
http://geourl.org/ping
http://ipings.com
http://www.weblogalot.com/ping
http://api.moreover.com/RPC2
http://bblog.com/ping.php