What cardano do?

Answer: It depends on what you're looking for. There are a number of different cardanos out there, each with its own unique benefits and drawbacks. If you're looking for a cardano that's easy to use, I would recommend the Cardano (ADA) coin. It's one of the most popular digital currencies out there right now, and it offers a number of features that make it attractive to users. But if you're looking for something more specialized, there are a number of other cardanos to choose from. For example, the Ripple (XRP) coin is designed for fast transactions, while the Steem (STEEM) coin is built for content creators. So it really depends on what you needs.