How to Install the Top Commentators Widget For Blogger
Just use any of the Widget installers provided here. Provide your blog URL in the Blog url: field of the widget installer.You can also set the number of commentators to be displayed and you can add the names to be filtered out. If multiple names are to be filtered out, then separate then using commas. Click Customize and then hit the Add Widget to Blog Button.
1) Widget Based On Recent 500 Comments.
2) Widget Based On Recent 5000 Comments.
Credits: Bloggerplugins.org