[Author of "Rich Dad Poor Dad": Buys Bitcoin every month and follows Warren Buffett's buy-and-hold strategy] Golden Finance reported that Robert Kiyosaki, author of "Rich Dad Poor Dad", warned against investing in Bitcoin exchange-traded funds (ETFs). He prefers to invest in real Bitcoin and calls Bitcoin ETFs fake Bitcoin. He recently revealed that he buys Bitcoin every month and follows Warren Buffett's buy-and-hold strategy.