Related Posts matching label tags

Related posts by categories gadget is a great SEO gadget. It shows related posts by categories under every post, for example you have applied a label named 'Blogger seo' to 5 Numbers of posts, each of these post will include all other 4 posts under it. In this way your blog will be optimized for a search engine. And your readers will get more content related to their selected post and will spend more and more time on your blog. To add this great gadget go to edit html section and search this code.

<data:post.body/>

Add the below code under this.

<b:if cond='data:blog.pageType == "item"'>
<div class='similiar'>
<div class='widget-content'>
<h3>You may also like:</h3>
<div id='data2007'/><br/><br/>
<div id='hoctro'>
</div>
<script type='text/javascript'>
var homeUrl3 = "<data:blog.homepageUrl/>";
var maxNumberOfPostsPerLabel = 6;
var maxNumberOfLabels = 10;
maxNumberOfPostsPerLabel = 100;
maxNumberOfLabels = 4;function listEntries10(json) {
var ul = document.createEle
'ul');
var maxPosts = (json.feed.entry.length <= maxNumberOfPostsPerLabel) ?
json.feed.entry.length : maxNumberOfPostsPerLabel;
for (var i = 0; i < maxPosts; i++) {
var entry = json.feed.entry[i];
var alturl;
for (var k = 0; k < 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 < 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<20; k++) label = label.replace("%20", " ");
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&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 = "<data:label.name/>";
var test = 0;
for (var i = 0; i < labelArray.length; i++)
if (labelArray[i] == textLabel) test = 1;
if (test == 0) {
labelArray.push(textLabel);
var maxLabels = (labelArray.length <= maxNumberOfLabels) ?
labelArray.length : maxNumberOfLabels;
if (numLabel < maxLabels) {
search10(homeUrl3, textLabel);
numLabel++
}
}
</b:loop>
</b:loop>
</script>
</div>
</div>
</b:if>

Now apply labels to every post, if you want to make categories apply same label to those posts which you want to add to a particular category.