I discovered a new pinging service a few days ago. Pingoat.com pings 50 blog search engines vs. the 20 search engines Pingomatic.com pings. Works exactly the same way. Put in your blog URL, blog name, select all the search engines, hit the submit button and go.
If you’re a blogger, you know you need to get into the directories. By pinging the search engines, you’re letting them know to spider your site and update their directories with your new content.