I found some interesting part about the auto-login hack.
Before I applied this hack to my site, people just need to enter my URL (for example: http://www.abc.com), and it would redirect users to my news module.
But, when I applied the hack to my website, It couldn't redirect users to any module, in other worlds, I couldn't use any module to be my first page.
Is there any solution for this problem? Thank you.