It's easy to get carried away with the idea of making money of the internet, but before you do anything remember these things:
1. Do not sign up to something you will not use
2. Do not sign up to something you are uncomfortable with
3. Do not lie when you sign up
4. Do not commit anything illegal
5. Make sure you are willing to do something before you start
6. Do not give away an credit card information for paid surveys or reviews