if you ask about the most field visited over the glob you can find that are sites earn online money, the only reason is that everybody seek to make some extra incomes from the easiest way without change anything in the behaviours of the persons. If you have got a work or you are jobless, the common websites where you can meet all kinds of peoples is there they can earn money online, as this sites are so much various, regarding to the amount that you can get from, and the type of offers they make, means money from free site is very few as to pay for investments, if you interested to the free kinds you may have some achievements to accomplish, for example to click on the adds or view some videos or banners, even to do some duties, the others types are where you deposit some funds and you buy marketing, if you want to sell it anywhere, or exchange it to others currencies, what you should verify is the proof of the payouts mad during the site is working, and also the comments of the persons knows the webpage, because there are some scammers with their strategy to earn your cash gratis without giving you any returns after a long time of waiting. Any website do not have any proof, I advice anyone to go into and put his fund there for grow up it, and the important thing is the trustees in making business, even you spend your hole time in but you know that you will be paid.
Dao x-crypto - online stock exchange
Decentralized autonomous stock exchange - a new way to trade digital currencies