Making money without a website is something very hot now in Internet. Even people are investing thousands of dollars in it and also earning from them some 3-4 times. I am talking obviously about GPT. Some people have an earning more than 1000 dollars in a single month from all such programs.
The only danger thing is scams. No one can assure whether a program he is investing is genuine or scam as even after paying some days many of them just shutdown, keep the money earned in their pocket and give some lame reason.