HTTP 狀態碼 301跟HTTP 狀態碼 404

相關參考：

301轉址
http://www.yes-seo.tw/2011/04/html-301-redirect/
http://www.webconfs.com/how-to-redirect-a-webpage.php
http://www.wulongjun.org/301-redirect
http://www.dannytalk.com/redirecting-in-plesk/
http://www.seowhy.com/24_24_zh.html

Response.Status
http://www.lao8.org/html/8/2010-7-10/Response.Status/

HTTP狀態碼
http://blog.miniasp.com/post/2009/01/16/Web-developer-should-know-about-HTTP-Status-Code.aspx