URL: http://code.google.com/speed/public-dns/
有 unix server 的人 /etc/resolv.conf 可以設它
nameserver 8.8.8.8
windows 使用者也可看這篇說明來設定
http://code.google.com/speed/public-dns/docs/using.html
好處是
Why should you try Google Public DNS?
By using Google Public DNS you can:
* Speed up your browsing experience.
* Improve your security.
* Get the results you expect with absolutely no redirection.