how much says that earn money online is the wastage of time

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My many friends says that we can earn money on internet without much effort. I tried many ways like advertising programme, pay per click, blogs and now on mylot. I don't know what i am doing. I think i am wasting my time on internet to earn money. Is there anyone who can help me to tell me the genuine way to earn money on net. Please help me. I am waiting for your response