"All in" doesn't like a wise investment decision. You should never invest more than you can afford to (easily) lose.

The 'This is a Goldman Sachs project' comments are, while very amusing, totally baseless. Anyone can hear Charles mention in the video that the team is very varied and that 'people who worked' for Goldman Sachs are on the team. - see http://ethereum.org/.

Goldman Sachs, the institution, has nothing to do with the project (duh). On the other hand, having people on board with deep financial expertise is great news, and means we can expect to see smart contracts templates that are immediately useful on decentralized exchanges.