This widget will decide the top commentators from the latest 5000 comments to your blog.But your blog hasn't such as more comments you can add that Top Commentators Widget instead of this one.It will decide the top commentators from the latest 500 comments.
However your blog have more than 500 comments add this widget:
1.Log in to your dashboard--> layout- ->Page Elements
2.Click on 'Add a Gadget' on the sidebar.
3.Select 'HTML/Javascript' and add the code given below and click save.
Copy the HTML Code and paste it your blog:
script type="text/javascript">
function pipeCallback(obj) {
document.write('<ol>');
var i;
for (i = 0; i < obj.count ; i++)
{
var href = "'" + obj.value.items[i].link + "'";
if(obj.value.items[i].link == "")
var item ="<li>" + obj.value.items[i].title + "</li>";
else
var item = "<li>" + "<a href=" + href + ">" + obj.value.items[i].title + "</a> </li>";
document.write(item);
}
document.write('</ol>');
}
</script>
<script src="http://pipes.yahoo.com/pipes/pipe.run?_render=json&_
callback=pipeCallback&_id=26191599715c07fbeaa491a5729e478b&url=http%3A%2F%2Fyourblog.blogspot.com&num=10&filter=" type="text/javascript">
</script>
Note : Remember to replace yourblog with your blog name.Do not include http://
You are done.