Memes, and a bit of creativity.
The post about your mom
The likes for a post
Because the "Hot" page of 9gag had nine "gags" (an image of a usually humorous nature)
me.
no
No
Search it!
Marvin Minsky
FunnyJunk and Reddit are similar to 9gag. 4chan is also similar in a way, but it is more mature than the others.
9gag seems to support at least jpg format pictures and embedded youtube videos. I cannot find anything on the site about what file formats they support. If you are still stuck you can email your query to contact@9gag.com.
it means that when people saw your post on the vote page, they disliked it. when you view it, there is no dislike button so i can see where you became confused, but there really is a dislike button. sorry, i guess that means the people didn't like your post very much....
cos its noy you or ure family