Adding website to block via /etc/hosts not working I block some websites via /etc/hosts on my machine. But for reddit.com it does not work. What does I have to do?

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1   localhost
255.255.255.255 broadcasthost
::1             localhost 
127.0.0.1 mackeeperapp.mackeeper.com
127.0.0.1 mackeeperapp2.mackeeper.com
127.0.0.1 mackeeperapp3.mackeeper.com
127.0.0.1 mackeeper.com
127.0.0.1 reddit.com
Safari keeps its own ephemeral DNS cache. If you've just added the record to /etc/hosts, try quitting Safari, running dscacheutil -flushcache and restarting the computer.