Like this below :
How to add top commentators widget on your blog ?
1. Go to Dashboard, click Design, click Add a Gadget
You can change :
- tutorialwebforblogger.blogspot.com with your blog URL.
- 15 number of commentators displayed.
- Blogfuel an author of blog.
4. Click Save and Done.
Now, you've already added top commentators widgets for your blog.