The memes that make the biggest splash aren't necessarily as super special as their creators. Look at the comment streams for memes by Raydog, nixieknox, Craziness_all_the_way and others on the leaderboard. Yes, the memes are good, but a big part of their popularity is as a place to gather for meme conversation. When people know they are going to get a response if they comment, they are more likely to comment. Some of the top funniest memes are in the comments. End of lecture.