You want front page? You want leaderboard? Submit your maximum daily allotment, funny or not, and comment like an electrified commenting machine. If you throw enough mud on the wall, sooner or later something will stick.
I'll never be that guy, is because I submit maybe one meme per week, and I only comment when I feel like I have something to add to the conversation (that, and I can be kind of a jerkass sometimes, so try not to be a jerkass).