I have seen on tv people that say they made like 5000 bucks in one day whit this online businesses is that true or only is a scam for the people.
It's definitely a scam. It's a good idea to do online research on these companies. Usually you'll find blogs or message boards where people who have worked for those companies post complaints about how they got scammed. I came close to working for what I thought was a multi-level marketing company, but I did some research and found out the company was not legit.
I guess if it's their own business it can be very true.