Datastories analyzed 4 million data points to see what makes it to the front page of Reddit:
#1. 5pm – 9pm PST is the hottest upvote time.
#2. Images get much more upvotes than text posts.
#3. Very Positive or Very Negative posts perform significantly better than Neutral ones.
#4. Text posts get more comments and stay on the front page longer.
#5. These 5 Sub-Reddits completely dominate the front page of Reddit: r/funny, r/pics, r/gifs, r/TodayILearned, r/gaming
#6. Putting a number in your headline increases chances of being among the top posts.
#7. Internal self-posts LIVE SIGNIFICANTLY LONGER than external posts.