为什么同一个网址有些人能打开,有些人打不开

http://www.performancebux.com/index.php?ref=mn56mn
别人能打开，我打不开。这是为什么？前几天还有人说打不开，但我能打开。我好像是昨天点了一封邮件里的连接就打不开了（不知道是不是有直接关系）。
邮件内容如下：
PerformanceBux 发送至 我
显示详细信息 3月12日 (2 天前) 回复

- 隐藏引用文字 -
Letting every one know that the site is now on two servers and is runing stronger then ever
We are still here we have not gone anywhere

For those who still can not cashout it is most likely becuase you do not have a country listed in your account please open a post int he forum

Also check out our new ad special to celebrate our new server Please take advantage it wont last long
http://performancebux.com/index.php?view=prices

===========================================
NEW SPECIAL DEAL FOR THE NEW SERVER
===========================================
Five Dollar Deal
20 Rented Referrals 30 Days ( $6 Value )
200 Link Credits ( $2.2 Value )
500000 Banner Credits ( $250 Value )
Click Here To Buy Now For $5!
我就点了一下这个连接
http://performancebux.com/index.php?view=prices
浏览器都是一样的,都是IE6,而且我用IE7和firefox都试了现在都打不开(原来都能打开)