How to Block a website??

1)) start run

2)) type
 
     notepad%windir%\system32\drivers\etc\ hosts
                                  
                              OR
 
Goto

C:\Windows\System32\drivers\etc\host

Notepad file will be open like  below.

3)) scroll down to below u will see
 
     # 127.0.0.1 localhost
 
     then
 
     # 127.0.0.1 add your website address name
 
  eg:
 
     # 127.0.0.1 www.facebook.com
 
     now facebook is blocked...enjoy.