There is no definitive answer to this question as there are a number of different websites that can be used for earning money. Some of the more popular options include online surveys, freelance sites, and GPT (get paid to) sites. It really depends on what your interests and skills are as to which site would be best for you. For example, if you enjoy taking online surveys then a site like Opinion Outpost would be a good option. If you have writing skills then a site like Fiverr or Upwork could be a better choice. Ultimately it comes down to finding the right fit for you and your talents.