shafou.com is a screamer website. When the webpage is opened, a close-up picture of Regan from The Exorcist appears with a loud scream. A few seconds later, the webpage reloads and the screamer is looped. When you click the screamer image the website tries to automatically share the website on your facebook account. However if you are not logged in to facebook this will fail and you will be presented with a login page. The website contains Base64 obfuscated code which makes it hard to actually guess its a screamer.
In June of 2010, the entire content of the website was replaced with the screamer. There was also a link at the bottom of the page that directed to another website, shafou.net, which was a blog that showed multiple pictures of a girl with Chinese text. A snapshot from February 10th, 2016 can be found here. Now, this link simply redirects to Shafou.com.
There is also a snapshot of Shafou.com from May 22th, 2011, it can be found here. It's just colored chinese text which are all clickable. It is unknown what these link do, although some of them appear to be porn sites, but it's not recommended to enter some of these websites, because they probably have a virus, be careful to not click any of the links.