The website of Sin Vergüenza comes in the default language that you have configured your browser. It is very common that the default setting is in another language than Catalan, but it is something that is easy to change. 

• In Firefox go to "Tools" menu, to the option "options", there you will find the language settings right at the bottom in "content". If you put Catalan thing right at the top of the list all pages will be displayed in Catalan if  it are available.
•  In Internet Explorer, go to  "Tools" menu, to the option "Internet Options", there you will  find the "languages" settings in the bottom of the "General" tab. If you put Catalan thing right at the top of the list all pages will be displayed in Catalan if  it are available. 
• In Google Chrome, go to "Tools"  menu (the button is located on the the right of the address bar) and there go to "Options". It will open a dialog box, there you have to go to "Advanced", finally go down to the section of "Web Content" where there is the option to "Change the default font and language for web pages". If you put Catalan thing right at the top of the list all pages will be displayed in Catalan if  it are available.  

You must remember, that once logged on the web, then it uses the language that you have selected in your user profile, instead of automatically detected in your browser.