Because with little effort and little spending of time of yours we can make money for free.
There is so many sites for doing that. Just using ptc sites that no investement required, and this the best way newbie in this field.
Can you imagine,if you can join on 20 PTC sites, that you can make money just doing click.... where every click is has $0.01 by you. And there is 5 -10 click ads that you can clicking for every day. that means you can make money $2,00 in a day.
Here some of the list of PT sites that you can join and start making money on that: