This is a very good option for those people who want to earn extra money online, however it alsorequires particular knowledge and skills. There are no activities in the world which don't require skills and knowledge. Everything you can face in the internet, where people claim that you can earn solid money without investments, all of these websites/platforms are scam. In my opinion, the best option for earning online is to apply to trading activity or affiliate marketing. These activities are checked by people and really can help you to earn some money. Anyway, they require enough skills as I said above and not all people are succeeded in them.