No one wants to plan for a loss but it is always better to be prepared. US have recently seen a real estate meltdown that has caused the entire economies of the world to go into recession. So, it is very important to foresee such meltdowns and be prepared for losses. A second income source will ensure that you have enough rotational money to see you through losses.
You can do a blog on any topic, provided you have public interested in it. You can make money with a blog showing ads through adware I like Google or selling affiliate products, or even their own small reports and e-books. Please note that win money with blogs requires much work and time. It has to be patient and be willing (a) to put a lot of time and effort
If you have a blog or other type of site, you can build affiliate links to different services on the website. Many people use Amazon as an affiliate partner. For example, if you are a beauty blogger writing about different products, you can set up Amazon affiliate links on your blog so that whenever someone buys the product you mention on Amazon, you receive a percentage of the sale. Amazon is not the only affiliate partner out there. Here is good, in-depth information on affiliate marketing.
If you wants a reliable secondary income source then I want to invite you to join www.ineutrino.in website and post quality answers/articles and the website pay for it. After posting answers/articles send link of the answer at firstname.lastname@example.org for evaluation. If your answer is good enough then you get paid for it. Following are the Terms and conditions: