I found people stealing my content the other day without refering back to my blog, so i was looking for a way to force content origin information added the content when copy and paste.

Add the following snippet to end of your “single.php” file, and it will generate “Original: [your blog name] URL:[your post url]” to the content they copy. It won’t make them stop stealing your content, but it will certainly make it a bit more annoying for them.

This will not be visible on the web page at all.

<script type="text/javascript">
document.body.oncopy=function(){
 event.returnValue=false;
 var t=document.selection.createRange().text;
 var s="Original Post From <?php bloginfo('name'); ?> , URL： <?php the_permalink() ?> ";
 clipboardData.setData('Text','rn'+t+'rn'+s+'rn');
}
</script>