It is 30 july 2015 when ETH initially was released. Everyone here might have noticed the amazing work done by ETH team. It is all there efforts that ETH stands the second coin in Crypto coin List.
I wish them a belated birthday, It has really been a great journey for Ethereum all along, although I didnt start with them but the time I have used their technology for several purposes has really be a wonderful one, and the 4 years they have spent in the market has really been worth it because within that space of 4 years, they have also been able to help other projects develop through their smart contract.
Ethereum has made a lot of people financially successful especially during their last all-time high, many people really made money through their platform too and I am sure we still have majority of people who have invested and also going to make money through them, imagine another 4 years with Ethereum, many great projects will still be born.