Today a random tweet appeared. The Anonymous @Anon_Central account showed a Tango Down for 9GAG.com. 9GAG is one of the websites that has caught populairity in the last year. This board on 4chan shows that there is an battle going on between Anonymous and 9GAG.
The reason behind the attack is "For the LuLz". If there is more information available we will share it with you.