Block Any Website Without Software

If you want to block adult site or other site on your pc so this trick is very useful for you. You can block any number of websites. When you blocked the site they cannot be open in any browsers like opera, chrome, firefox and internet explorer etc. We blocked the sites with window host file and will use the
IP Address 127.0.0.1 local host..

Go to My Computer and then operating system ( usually C Drive )
After it go to " Windows " and then " System32 "
After it go to " Drivers " and then "etc "

Here you will see Host File. Open this file in Notepad window and see the last some lines of this file.
Add the address of that site which you want to block prefixed by 127.0.0.1

For example I want to blocked www.Facebook.com
See the screen shot

Now save this file.
Note: Remember that you will be insert URL with www and without www like as shown in the screen shot.