İlk önce sırasıyla ;

1. Yerleşim
2. HTML'yi Düzenle
3. Widget Şablonlarını Genişlet

sonra " CTRL + F " tuşuna basıp arıyoruz.

    <data:post.body/>

bunun hemen yanına (Dikkat edin </p> tagını geçmeyin.) aşağıdaki kodu ekliyoruz.

<b:if cond='data:blog.pageType == "item"'>
       <div class='similiar'>
           <!-- *****************http://dersphp.blogspot.com*****Mar,2009****************** -->
           <!-- *****************Related Articles by Labels - Take Two****************** -->

           <!--
            Modified by JackBook.Com to make it easier to use.
           1. Now, users don't need to change anything to use this widget. just copy and paste, and done!
           2. The current article will also be listed, now it's no more.
           -->

           <div class='widget-content'>
           <h3>Benzer Yazılar</h3>
           <div id='data2007'/><br/><br/>
 
               <script type='text/javascript'>

               var homeUrl3 = &quot;<data:blog.homepageUrl/>&quot;;
               var maxNumberOfPostsPerLabel = 4;
               var maxNumberOfLabels = 10;

               maxNumberOfPostsPerLabel = 100;
               maxNumberOfLabels = 3;


               function listEntries10(json) {
                 var ul = document.createElement('ul');
                 var maxPosts = (json.feed.entry.length &lt;= maxNumberOfPostsPerLabel) ?
                                json.feed.entry.length : maxNumberOfPostsPerLabel;
                 for (var i = 0; i &lt; maxPosts; i++) {
                   var entry = json.feed.entry[i];
                   var alturl;

                   for (var k = 0; k &lt; entry.link.length; k++) {
                     if (entry.link[k].rel == 'alternate') {
                       alturl = entry.link[k].href;
                       break;
                     }
                   }
                   var li = document.createElement('li');
                   var a = document.createElement('a');
                   a.href = alturl;

                   if(a.href!=location.href) {
                       var txt = document.createTextNode(entry.title.$t);
                       a.appendChild(txt);
                       li.appendChild(a);
                       ul.appendChild(li);
                   }
                 }
                 for (var l = 0; l &lt; json.feed.link.length; l++) {
                   if (json.feed.link[l].rel == 'alternate') {
                     var raw = json.feed.link[l].href;
                     var label = raw.substr(homeUrl3.length+13);
                     var k;
                     for (k=0; k&lt;20; k++) label = label.replace(&quot;%20&quot;, &quot; &quot;);
                     var txt = document.createTextNode(label);
                     var h = document.createElement('b');
                     h.appendChild(txt);
                     var div1 = document.createElement('div');
                      div1.appendChild(h);
                     div1.appendChild(ul);
                     document.getElementById('data2007').appendChild(div1);
                   }
                 }
               }
               function search10(query, label) {

               var script = document.createElement('script');
               script.setAttribute('src', query + 'feeds/posts/default/-/'
                + label +
               '?alt=json-in-script&amp;callback=listEntries10');
               script.setAttribute('type', 'text/javascript');
               document.documentElement.firstChild.appendChild(script);
               }

               var labelArray = new Array();
               var numLabel = 0;

               <b:loop values='data:posts' var='post'>
                 <b:loop values='data:post.labels' var='label'>
                   textLabel = &quot;<data:label.name/>&quot;;
             
                   var test = 0;
                   for (var i = 0; i &lt; labelArray.length; i++)
                   if (labelArray[i] == textLabel) test = 1;
                   if (test == 0) {
                      labelArray.push(textLabel);
                      var maxLabels = (labelArray.length &lt;= maxNumberOfLabels) ?
                             labelArray.length : maxNumberOfLabels;
                      if (numLabel &lt; maxLabels) {
                         search10(homeUrl3, textLabel);
                         numLabel++;
                      }
                   }
                 </b:loop>
               </b:loop>
               </script>
           </div>

Kaynak: dersphp.blogspot.com
Alıntı Yaparken Kaynak Belirtirmelisiniz.