Here an suggestion to evolve the post visibility, what wecould do about the voting i posted bellow in the comment:

Fair visibility for all posts

Currently posts are not only rewarded exponentially, but also they get a lot more votes if they become visible on the trending page. So even with linear vote-counting, they are rewarded exponentially, because they attract more voters through being visible.
It would be much more fair if the posts which are displayed on the main site as default are drawn in a lottery like style. Every time you reload the page the displayed posts on the top site could be drawn through a lottery. The more votes they have already the higher the chance to be selected. This would give all participants a fair chance to be listed at the top and therefore attract more votes.