Can anyone know how to earn money by internet without investing money?

Unfortunately, there is no good way for the average person to make money on line. In general, almost all money making sites on the web are scams. Under no circumstances should you give any money making site your credit card number. Never sign up for any "free" service that is free for one month and then you have to cancel it to avoid credit card charges. You will find it very hard to cancel. The phone number they give you to cancel may always be busy, so you can't cancel. They will often charge your credit card even after you think you have cancelled. Never give a survey site your bank account number or personal information.
Many sites claim you can make money by filling out surveys or clicking on ads or some other silly method. They screw you around answering some surveys and then try to push the "free" offers that you have to charge to your credit card. One common trick they play is that they let you make 5-10 dollars easiliy. But their website rules say you have to earn 40 dollars before they send you a check. To make the extra money you have to participate in "free" offers. I have played aroung on some of these sites and it always come down to them wanting to get your credit card number in the end. Don't let them.
You will find many people on the web that claim they made a lot of money at such-and-such a website. They are usually liars trying to make money. For instance they will say: "Go to cashcrap.com/q2347." The "q2347" is a signal to the Cashcrap site that you are being referred to them by "q2347." If they sucker money out of you, "q2347" gets a kickback. These coded signals can be hidden by different methods in the link.
Note that I say there is no good way for the AVERAGE person to make money on the internet. If you are not average, and have some special skill, you can make money. If you are good at selling things, try selling things on E-bay. If you are good at writing, set up a blog or other site and sell ads. If you are good at computer programming, try setting up a site that uses your skills. Since I don't know what special skills you have, I have a hard time advising you on this.
However, if you go to a site that claims ANYBODY can make money, it is usually a scam

No, they all want your credit # for shipping.

yes we can earn in internet without investment.. register below website.
http://www.moneycosmos.com/?r=331467

No it is not possible. If nothing else, you have to invest in a subscription to an ISP. You also have to have a computer. Most "make money on the Internet" schemes, which promise to pay you for clicking on ads, or for answering surveys, and similar work, are worthless.

If you have a good idea for a web site on which you can sell goods and services, you have to invest time and money to develop and program the site. If your idea is good, it will earn money, but that initial investment is required.

There is no easy path to money. It always takes work. Even winning a lottery requires an investment.

here is the best way:
http://www.freewebs.com/earnrapidshareac...