Well explained @whatsup how do work reward pool. However, every vote on the site is not worth a flat amount of money. Instead, the amount earned is based on both the number of votes an individual receives and the amount of SP a voter has. Have more sp users worth than low sp users in any platform.So better way increase vote power us.To incentivize sort of voting, there is also the curation reward paid out in the form of sp. Author to only vote for content that his believe is high quality.