If we add <!–more–>, the content after will now show at homepage, and other categories. When visit the detailed post, the content after <!–more–> will show.
 Now I will teach you how to add adsense code within the function, that is to say, when we visit the detailed post, the adsense ads will show also, at other pages, it will not show.
 Go to wp-includes, open page-templates.php, search <span id=”more, and click the second results, at line 223, add your code within <span id=”more-‘ . $id . ‘”>Put your code here></span>
 Save and upload the page to your host.
Demo: www.wordpublish.com ,this site is on cartridges, and digital cameras.