I have a nice theory about posts being successful only by the random() chance setup by some upvote bots. To make an article trendy, triggering other bot's attention; thus; human interaction at the main page (80% non-readers that upvote only for the curation reward).
This is a nice idea, yet... the community has to change a bit for it to quite work. Plus, wasting a tag (that you cannot edit back later) on a challenge is... lets say "futile" (I prefer to put a useful tag that may point someone into my article later).
I will like that. Any help will be appreciated! Thank you, and let me know about it!