It can be quite tricky to know whether a website is a scam or not. There are a huge variety of money making websites out there all claiming to be better than the rest. If you are new to making money online it can be confusing to know which ones to trust. I would recommend that you start off by only joining sites which are free to join. Then at least you have not invested any money in the site - only time. Also read forums and blogs about making money online and look for proof that people have been paid by the sites. You will soon find people that you trust online and you can use their recommendations to help you. A good rule of thumb is that sites which look too good to be true usually are!