diff --git a/404.html b/404.html
index 843e105..2995794 100644
--- a/404.html
+++ b/404.html
@@ -43,7 +43,7 @@ <h2 id="toc_3">二、维度攻击</h2>
       /^(  )^\                     Ascii arts included in this page:
       \,(..),/                     - R2D2, provided by: http://www.chris.com/
         V~~V                       - Texts, generated from: http://www.network-science.de/ascii/  
-                                   http:// cnfeat.github.io
+                                   http:// sparon.github.io
             
 ------------------------------------------------------------------>
 
diff --git a/_layouts/post.html b/_layouts/post.html
index fb0dd60..9eb9f23 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -73,7 +73,7 @@ <h2 class="subheading">{{ page.subtitle }}</h2>
     (function() {  // DON'T EDIT BELOW THIS LINE
         var d = document, s = d.createElement('script');
 
-        s.src = '//cnfeat.disqus.com/embed.js';
+        s.src = '//sparon.disqus.com/embed.js';
 
         s.setAttribute('data-timestamp', +new Date());
         (d.head || d.body).appendChild(s);
diff --git a/about.md b/about.md
index 1b63b7e..5051451 100644
--- a/about.md
+++ b/about.md
@@ -32,7 +32,7 @@ header-color: "#47a5ed"
 
 
 <center>
-    <p><img src="http://i173.photobucket.com/albums/w63/cnfeat/2015-08-29-2_zpsqj7po8eo.png" align="center"></p>
+    <p><img src="" align="center"></p>
 </center>