But who uses pictures so small FB will accept them? How do you get round the problem of either serving tiny pics to make your visitors have a bad experience, or facebook getting the images it likes?

//thumb for facebook based on http://www.radupoenaru.com/how-to-generate-image_src-for-facebook-links-in-wordpress-theme/
function add_image_src(){
    global $post; // get the global variable post
    if ($post){ // if it exists and is only a single post
        if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) { // maybe the post has a thumbnail
            $thumb = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID)); // based on add-image-src-meta-tag plugin
            echo "\t\n";
        } else { // pattern for recognizing first image in post
            $pattern = '!post_content, $matches);
            $image_src = $matches['1'][0]; // first image would be the representative image
            if ($image_src) { // extract it as Facebook wants it
                echo "\t\n"; }
            else { // then the post has no image
                echo "\t\n"; } // by lelebart
        }
    } else {
        echo "\t\n"; // by lelebart
    }
}
add_action('wp_head', 'add_image_src');

i’m not expert to make a plugin, maybe you’re able to do that: set a default image via the admin interface, not just have a “fb_logo.png” on the courrent theme.
best regards, Valerio
(sorry for my bad english, hope you understand anyway)

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Do you have any idea, what is the coding for flash embedded .

Thank you.

I just follow steps above and copy the suggested code in to my header.php

on my blog home getting code :
$id =$post->ID; $the_content =$wpdb->get_var(“SELECT post_content FROM $wpdb->posts WHERE ID = $id”); $pattern = ‘!’;

any suggestion .

thank you
best regards
Anthony