add_action("init","my_functions");

function my_functions(){
	remove_action('save_post', 'bp_blogs_record_post');
	add_action( 'save_post', 'my_blogs_record_post', 10, 2 );
}	

function my_blogs_record_post( $post_id, $post, $user_id = false ) {
	global $bp, $wpdb;

	$post_id = (int)$post_id;
	$blog_id = (int)$wpdb->blogid;

	if ( !$user_id )
		$user_id = (int)$post->post_author;

	/* This is to stop infinite loops with Donncha's sitewide tags plugin */
	if ( (int)$bp->site_options['tags_blog_id'] == (int)$blog_id )
		return false;

	/* Don't record this if it's not a post */
	if ( $post->post_type != 'post' )
		return false;

	if ( 'publish' == $post->post_status && '' == $post->post_password ) {
		if ( (int)get_blog_option( $blog_id, 'blog_public' ) || !bp_core_is_multisite() ) {
			/* Record this in activity streams */
			$post_permalink = get_permalink( $post_id );

			$activity_action = sprintf( __( '%s wrote a new blog post: %s', 'buddypress' ), bp_core_get_userlink( (int)$post->post_author ), '<a href="' . $post_permalink . '">' . $post->post_title . '</a>' );
			$activity_content = get_the_post_thumbnail( $post_id );

			my_blogs_record_activity( array(
				'user_id' => (int)$post->post_author,
				'action' => apply_filters( 'bp_blogs_activity_new_post_action', $activity_action, &$post, $post_permalink ),
				'content' => apply_filters( 'bp_blogs_activity_new_post_content', $activity_content, &$post, $post_permalink ),
				'primary_link' => apply_filters( 'bp_blogs_activity_new_post_primary_link', $post_permalink, $post_id ),
				'type' => 'new_blog_post',
				'item_id' => $blog_id,
				'secondary_item_id' => $post_id,
				'recorded_time' => $post->post_date_gmt
			));
		}
	} else
		bp_blogs_remove_post( $post_id, $blog_id );

	bp_blogs_update_blogmeta( $blog_id, 'last_activity', gmdate( "Y-m-d H:i:s" ) );

	do_action( 'bp_blogs_new_blog_post', $post_id, $post, $user_id );
}

function my_blogs_record_activity( $args = '' ) {
	global $bp;

	if ( !function_exists( 'bp_activity_add' ) )
		return false;

	/* Because blog, comment, and blog post code execution happens before anything else
	   we may need to manually instantiate the activity component globals */
	if ( !$bp->activity && function_exists('bp_activity_setup_globals') )
		bp_activity_setup_globals();

	$defaults = array(
		'user_id' => $bp->loggedin_user->id,
		'action' => '',
		'content' => '',
		'primary_link' => '',
		'component' => $bp->blogs->id,
		'type' => false,
		'item_id' => false,
		'secondary_item_id' => false,
		'recorded_time' => gmdate( "Y-m-d H:i:s" ),
		'hide_sitewide' => false
	);

	$r = wp_parse_args( $args, $defaults );
	extract( $r, EXTR_SKIP );


	if ( !empty( $action ) )
		$action = apply_filters( 'bp_blogs_record_activity_action', $action );

	/* Check for an existing entry and update if one exists. */
	$id = bp_activity_get_activity_id( array(
		'user_id' => $user_id,
		'component' => $component,
		'type' => $type,
		'item_id' => $item_id,
		'secondary_item_id' => $secondary_item_id
	) );

	return bp_activity_add( array( 'id' => $id, 'user_id' => $user_id, 'action' => $action, 'content' => $content, 'primary_link' => $primary_link, 'component' => $component, 'type' => $type, 'item_id' => $item_id, 'secondary_item_id' => $secondary_item_id, 'recorded_time' => $recorded_time, 'hide_sitewide' => $hide_sitewide ) );
}