You don't have to be a professional photographer to sell your photos for money. People are constantly in need of stock photography for websites, presentations, brochures and so on, and are willing to pay for the right image. People generally search for images on stock photography sites by keywords, not by photographer, so you have the same chance as anyone else of having your image picked. Just be careful that you don't ha Fotolia, ShutterStock, Dreamstime and iStockphoto. The great thing about this is that it's truly "set it and forget it".

The above list is by no means comprehensive, but it highlights some of the new and interesting ways to make money online without investing any money, without having a product of your own, and without having expert sales and marketing skills. Most of all, unlike taking surveys or getting paid to read e-mail, the potential return on your time investment is substantial.