Promoting Blogger.com Blogs: Send Pings

I’ll start my testing with the simplest option: ask Blogger.com to ping the blog notification services. On my blog, Neil's Open Source & Linux Blog, I turned on pings on July 20. Here’s how:

1. From the Blogger.com Dashboard, click Settings.
2. Under the Settings tab, click Publishing.
3. For the Send Pings option, select Yes from the drop-down menu.
4. Click [Save Settings].

Does it work? So far, no. Here’s how I test:
Enter the URL to your site in the Google search field, preceeded by “site:” -- like this:

site:http://njlinux.blogspot.com/

See the results here: site:http://njlinux.blogspot.com/ - Google Search
Does this feature even work? If so, what services does it ping?