I like the word "evergreen" green is my favourite colour
If you realize, number of votes usually declines after a few days... but what about those posts that were made for the community and are constantly revisited and a resource... tutorials, and so on.... people still go and check them all the time. I still see @carrieallen markdown tutorial from time to time to refresh... why not being able to vote... I don't understand the complex things behind the blockchain technology but I'm sure if something "deserves" past payout tools will spring to make it possible one day.