I have some things to say:
1.gifs are getting more points because they're more entertaining, I experienced it myself
2.overused ideas are overused templates/memes like:how ... Respect us to react to ... For the ...th time
3.lately it haven't been a problem, but the younger Imgflip users (aka underage kids) fall for these and give those meme creators free points
4.Imgflip fun stream (only, and mostly) is a popularity contest. Most people you see there are some popular people out here (like you are top 1 points, and things) so the more a user is known the easier for them is to get to front page
(On-topic: I was on front page once by a complete accident)