Create Auto Read More ( no thumbnail)

Log in your blogger account , go to Edit HTML ( should back up your template) > choose Expand Widget Tempate , then look for the code <data:post.body> ( press Ctrl F or find it each line , up to you)

Replace it by this whole code :

<b:if cond='data:blog.pageType != &quot;item&quot;'>
<div expr:id='&quot;summary&quot; + data:post.id'/>
<script type='text/javascript'>
var blogID = &quot;937920098338306331&quot;;
function retriveSummaryPost<data:post.id/>(json){document.getElementById(&quot;summary<data:post.id/>&quot;).innerHTML
= json.entry.summary.$t + &quot;...&quot;}

function createSummaryPost<data:post.id/>(POSTID){ var script =
document.createElement(&quot;script&quot;);
script.src = &quot;http://www.blogger.com/feeds/&quot;+blogID+&quot;/posts/summary/&quot;+POSTID+&quot;?alt=json-in-script&amp;callback=retriveSummaryPost<data:post.id/>&quot;;
script.type = &quot;text/javascript&quot;; document.getElementsByTagName(&#39;head&#39;)[0].appendChild(script);
}
</script>
<script type='text/javascript'>
createSummaryPost<data:post.id/>(&quot;<data:post.id/>&quot;);
</script>
<span class='rmlink' style='float:right'><a expr:href='data:post.url'>--&gt;Read more...</a></span>
</b:if>
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<div id='post_body'><data:post.body/></div>
</b:if>

Look for the red code, that is the number of your blogID, if you don't know how to get your blogID , click here to view the instruction.

Note: If you can not find the code because you have changed your template source many times, so try with the last as you see.

credit to http://zenplate.blogspot.com for good tutorial