Creating Object Types
Objects are the "nouns" or targets for actions taken by people in your facebook app. They are represented by HTML markup on a particular URL which uniquely defines each object. You can use one of the common objects when creating a story or define your own custom object types. You can refer to facebook developer on https://developers.facebook.com/docs/opengraph/creating-object-types/#properties // Add this to open html tag
<html expr:..... xmlns:fb='http://ogp.me/ns/fb#'>
// Or add this to head tag. I prefer to use both.
<head prefix='og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# blog: http://ogp.me/ns/blog#'>
//Get your profile id like this https://www.facebook.com/profile.php?id=4
<meta content='YOUR_PROFILE_ID' property='fb:admins'/>
//Make you fb application on https://developers.facebook.com/apps?ref=ezadblog.my
<meta content='YOUR_APP_ID' property='fb:app_id'/>
<meta content='blog' property='og:type'/>
<meta content='en_US' property='og:locale'/>
<meta content='YOUR_BLOG_TITLE' property='og:site_name'/>
<meta expr:href='data:blog.url' property='og:url'/>
<meta expr:content='data:blog.pageTitle' property='og:title'/>
//This will show your post search description
<b:if cond='data:blog.metaDescription != ""'>
<meta expr:content='data:blog.metaDescription' property='og:description'/>
<b:else/>
//If dont have search description it will show this.edit this description.
<meta content='Ezad Blog is a blog for EzadNet (http://www.ezadnet.my). Information about website,network,security and many more over the internet.' property='og:description'/>
</b:if>
Delete comment start with // when you using on your blog and test your post url on https://developers.facebook.com/tools/debug/.Hope this article help you.Leave a comment if you have a question.
fyna 
