21 Marketplace (formerly Earn) is a website where you can sign in and be paid for doing simple tasks and replying to simple paid messages that you receive every day. They are paying you for every message that you answer. You receive 1 dollar for one message answered. On the average you receive 1 message to answer every 2-6 days, some years ago there were many messages to answer. I can say that I have made with this website 0.06 Bitcoin in a year some years ago for answering simple messages that they have sent me every 3-6 days. They questions that they are asking you in their messages are very interesting. This website was from the very beginning a good idea, receive money to read and answer to (some) emails. When they started the name of the 21 Marketplace was Earn. Review collected by and hosted on G2.com.

At the beginning there were many messages to answer, today they send you a message every week. Years ago this website was very good for making money, today you can make half of the money you were making some years ago.

What I do not like is that when answering their mesages, after being paid 1 dollar in bitcoin, the senders of the messages promise you some tokens (they arrive in myetherwallet). These tokens arrive in 1-4 months to you and you can not do something with them because their dollar value is too low to be exchanged for ethereum or bitcoin. Thus you earn 1 dollar in bitcoin for every message that you answer and some tokens that have no value. Review collected by and hosted on G2.com.