Sort:  

What is that? I never really gave it a closer look.

Every time you make a photo for the contest, or 5 comments on a contest-tagged photo, you are awarded 5 XD points. Then you gain levels, and each level increases the upvote multiplier for the bot on your post. Any day you don’t post, you lose 25% of the multiplier.

It’s addictive to keep up with stats!