If you are looking for money on the Internet without investments, then you should take a closer look at affiliate programs. Their essence is like that: you place a link to a site (page/specific product or service, etc.) in your channels - social networks, your own site, mailing to friends with an offer (or without it) to become a participant in a specific project.
Naturally, it is important to take into account such factors as: how well your target audience corresponds to the segment of consumers, sincere interest in the “product”, “percentages” from the sale through your referral link. Ideally, you need to have knowledge of advertising and bear the costs for it in order to promote the affiliate program. But even if you rely only on luck, you can make money.
In mlm.center, you can also earn by distributing a referral link. Yes, at the initial stage, you will need to invest $1, but can this amount be called an investment, especially considering that it is guaranteed to pay off with a yield of 150%? In addition, the company invests its own resources in promotion and advertising, thus stimulating a faster closing of the "tables", and, consequently, the quickest receipt of money by everyone.