The word community says it all. People want to share ideas and opinions and that’s why you should share yours too. Writing fact based articles can attract a certain audience but you want to reach out to the mass and capture the most readers as possible. Be bold and play around with some ideas that will inspire people to share their opinion about it. An upvote also says that people want others to be able to read the same article. So if I value something, I want to make sure that somebody else can benefit from it too. That’s why the good articles are rewarded and will end up being on top of the list.