UPDATE: Coinbase/GDAX has added Bitcoin Cash to its exchange. It was created from a "hard fork" of bitcoin – that is, bitcoin split into 2 different currencies. Bitcoin Cash is faster and cheaper than bitcoin, which is why the Bitcoin Cash team decided to do the hard fork.

Some traders are concerned that Bitcoin Cash doesn't have as strong of a development team, and they consider Bitcoin Cash a "fake" version of bitcoin, and that its value will drop. Bitcoin Cash supporters think it's the true "bitcoin" because it allows the transfer of value for a small fee – as bitcoin's creators originally intended. They think Bitcoin Cash will eventually be more valuable than the original bitcoin.

You'll have to decide for yourself whether you think Bitcoin Cash is a good investment. It could go either way – but then, so could the original bitcoin; or maybe another coin will rise up and beat them both.