diff --git a/adm/config_form.php b/adm/config_form.php
index fbefc03d8..543f6ed08 100644
--- a/adm/config_form.php
+++ b/adm/config_form.php
@@ -722,7 +722,7 @@ $pg_anchor = '<ul class="anchor">
     <tbody>
     <tr>
         <th scope="row"><label for="cf_facebook_use">페이스북 사용</label></th>
-        <td><input type="checkbox" name="cf_facebook_use" value="1" id="cf_facebook_use" <?php echo $config['cf_facebook_use']?'checked':''; ?>> 사용</td>
+        <td colspan="3"><input type="checkbox" name="cf_facebook_use" value="1" id="cf_facebook_use" <?php echo $config['cf_facebook_use']?'checked':''; ?>> 사용</td>
     </tr>
     <tr>
         <th scope="row"><label for="cf_facebook_appid">페이스북 앱 ID</label></th>
diff --git a/config.php b/config.php
index 92127c493..4abdd6c5d 100644
--- a/config.php
+++ b/config.php
@@ -128,15 +128,6 @@ define('G4_SPECIAL',        64); // 특수문자
 define('G4_MOBILE_AGENT',   'phone|samsung|lgtel|mobile|skt|nokia|blackberry|android|sony');
 
 
-/********************
-    SNS 상수
-********************/
-
-define('G4_FACEBOOK_APPID',     '119146498278078');
-define('G4_FACEBOOK_SECRET',    '311e0d6ff8ff43cfe0e75fe82d71777c');
-define('G4_FACEBOOK_CALLBACK',  G4_SNS_URL.'/facebook/callback.php');
-
-
 /********************
     기타 상수
 ********************/
@@ -144,4 +135,4 @@ define('G4_FACEBOOK_CALLBACK',  G4_SNS_URL.'/facebook/callback.php');
 // 게시판에서 링크의 기본갯수를 말합니다.
 // 필드를 추가하면 이 숫자를 필드수에 맞게 늘려주십시오.
 define('G4_LINK_COUNT', 2);
-?>`
\ No newline at end of file
+?>
\ No newline at end of file
diff --git a/extend/.htaccess b/extend/.htaccess
index e69de29bb..4287ca861 100644
--- a/extend/.htaccess
+++ b/extend/.htaccess
@@ -0,0 +1 @@
+#
\ No newline at end of file
diff --git a/plugin/sns/facebook/_common.php b/plugin/sns/facebook/_common.php
index c7b38deb9..28c56e92c 100644
--- a/plugin/sns/facebook/_common.php
+++ b/plugin/sns/facebook/_common.php
@@ -1,4 +1,3 @@
 <?php
-$g4_path = "../../.."; // common.php 의 상대 경로
-include_once($g4_path."/common.php");
+include_once("../../../common.php");
 ?>
\ No newline at end of file
diff --git a/plugin/sns/facebook/callback.php b/plugin/sns/facebook/callback.php
index 93e576e68..a4dc95012 100644
--- a/plugin/sns/facebook/callback.php
+++ b/plugin/sns/facebook/callback.php
@@ -1,5 +1,29 @@
 <?php
 include_once("./_common.php");
+include_once(G4_SNS_PATH."/facebook/src/facebook.php");
 
-die('콜백');
+$facebook = new Facebook(array(
+  'appId'  => $config['cf_facebook_appid'],
+  'secret' => $config['cf_facebook_secret'],
+));
+
+$user = $facebook->getUser();
+print_r2($user); exit;
+
+if ($user) {
+    try {
+        $user_profile = $facebook->api('/me');
+    } catch (FacebookApiException $e) {
+        error_log($e);
+        $user = NULL;
+    }
+}
+
+if ($user_profile) {
+    sql_query(" update {$g4['member_table']} set mb_facebook_user = '{$_REQUEST['code']}' where mb_id = '{$member['mb_id']}' ");
+    alert_close("페이스북 승인이 성공 했습니다.\\n\\n페이스북 체크를 하시면 모든 댓글 등록시 페이스북에도 자동 등록됩니다.");
+} else {
+    sql_query(" update {$g4['member_table']} set mb_facebook_user = '' where mb_id = '{$member['mb_id']}' ");
+    alert_close("페이스북을 로그아웃 했습니다.");
+}
 ?>
\ No newline at end of file
diff --git a/skin/board/basic/view_comment.skin.php b/skin/board/basic/view_comment.skin.php
index b6b5097ea..9b0293a90 100644
--- a/skin/board/basic/view_comment.skin.php
+++ b/skin/board/basic/view_comment.skin.php
@@ -116,8 +116,55 @@ var char_max = parseInt(<?php echo $comment_max ?>); // 최대
         <tr>
             <th scope="row">SNS 등록</th>
             <td>
-                <div id="sns_facebook">
-                <?php
+<?php 
+// https://developers.facebook.com/docs/reference/php/
+if ($config['cf_facebook_use']) {
+    include_once(G4_SNS_PATH."/facebook/src/facebook.php");
+    
+    $facebook = new Facebook(array(
+      'appId'  => $config['cf_facebook_appid'],
+      'secret' => $config['cf_facebook_secret'],
+    ));
+
+    $user = $facebook->getUser();
+
+
+    /*
+    if ($member['mb_facebook_user']) {
+        $user = $member['mb_facebook_user'];
+    } else {
+        $user = $facebook->getUser();
+
+        if ($user) {
+            try {
+                $user_profile = $facebook->api('/me');
+            } catch (FacebookApiException $e) {
+                error_log($e);
+                $user = null;
+            }
+        }
+    }
+    */
+    $user = $member['mb_facebook_user'] ? $member['mb_facebook_user'] : $facebook->getUser();
+
+    if ($user) {
+        //$facebook_url = $facebook->getLogoutUrl(array("next"=>G4_SNS_URL."/facebook/callback.php"));
+        $facebook_url = $facebook->getLogoutUrl();
+    } else {
+        //$facebook_url = $facebook->getLoginUrl(array("redirect_uri"=>G4_SNS_URL."/facebook/callback.php"));
+        $facebook_url = $facebook->getLoginUrl(array("redirect_uri"=>G4_SNS_URL."/facebook/callback.php", "scope"=>"user_about_me,publish_stream,read_friendlists,offline_access"));
+    }
+
+    echo '<div id="sns_facebook">';
+    $flag = $member['mb_facebook_use_id'] ? 'on' : 'off';
+    echo '<a href="'.$facebook_url.'" target="_blank"><img src="'.G4_SNS_URL.'/icon/facebook_'.$flag.'.png">';
+    echo '<input type="checkbox" name="wr_facebook_checked" '.($member['mb_facebook_checked']?'checked':'').'>';
+    echo '</div>';
+}
+?>
+
+<?php
+/*
 include(G4_SNS_PATH.'/facebook/src/facebook.php');
 
 $facebook = new Facebook(array('appId'=>G4_FACEBOOK_APPID,'secret'=>G4_FACEBOOK_SECRET));
@@ -143,15 +190,15 @@ if ($user) {
     $loginUrl = $facebook->getLoginUrl(array('redirect_uri'=>(G4_SNS_URL.'/facebook/callback.php')));
     //$loginUrl = $facebook->getLoginUrl();
 }
-
-                ?>
-                    <div><a href="<?php echo $loginUrl; ?>" target="_blank"><img src="<?php echo G4_SNS_URL; ?>/icon/facebook_off.png" id="icon_facebook"></a></div>
+*/
+?>
+                    <!-- <div><a href="<?php echo $loginUrl; ?>" target="_blank"><img src="<?php echo G4_SNS_URL; ?>/icon/facebook_off.png" id="icon_facebook"></a></div>
                     <div><input type="checkbox" name="chk_facebook" value="1"></div>
                 </div>
                 <div id="sns_twitter">
                     <div><img src="<?php echo G4_SNS_URL; ?>/icon/twitter_off.png" id="icon_twitter"></div>
                     <div><input type="checkbox" name="chk_twitter" value="1"></div>
-                </div>
+                </div> -->
             </td>
         </tr>
         <tr>