I love referral and affiliate marketing. It’s where the vast majority of my income comes from these days. Even if you aren’t a blogger, you can get in on the action as well. You can get paid to refer your friends to a wide variety of legitimate services. While there are many companies like StitchFix that will give you store credit for referrals, we are focusing on those that offer cold, hard cash today. Keep in mind, you will need to be signed up for the program yourself to take advantage of the program. But, you shouldn’t be referring people to things you don’t use anyway.
In April 2008 the State of New York inserted an item in the state budget asserting sales tax jurisdiction over Amazon.com sales to residents of New York, based on the existence of affiliate links from New York–based websites to Amazon. The state asserts that even one such affiliate constitutes Amazon having a business presence in the state, and is sufficient to allow New York to tax all Amazon sales to state residents. Amazon challenged the amendment and lost at the trial level in January 2009. The case is currently making its way through the New York appeals courts.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.