This way is a practical way for the blog is always known to many visitors.
Bloggers actually have provided a ping service can be found on page settings-> Publish-> ping. if you are not satisfied with the Blogger service you can choose the one service that is below.
Ping Tips:
Ping if you've updated your blog.
Ping if you do the latest post
Do not do ping too often because it can be said as spam
Ping necessary and not excessive.
My Favorite Ping is:
http://mypagerank.net/service_pingservice_index
http://pingomatic.com/
Below is a collection of addresses ping services that you can use for blog promotion:
Select for you.