Disgusting payment system!! Mad currency exchange rate. Sometimes block accounts. A year ago, paypal took the money from my account... Someone bought my product with stolen credit cards.
I'm too careful to risk that.. Yes, it is possible to earn a lot of money, but it didn't fit me. There is always a chance to lose money, and still need strong nerves.
Request network - a very interesting project. The price of coins now below ICO prices by 30%. The project came in unfortunate time - the beginning of the growth of bitcoin. So it was undervalued.