UpBit Indonesia started a referral program where you can get 50 ICX (~15$) for each user you refer to their platform. The duration of the campaign is from 16:00 15th Jul 2019 ~ 23:59 31st Jul 2019. You can earn up to 5.000 ICX (~1500$). Total 495,000 ICX for this promotion. First come first serve basis.