Unlike some of the other sites, with Inbox Dollar, you essentially sign up to take advantage of whatever Inbox Dollar makes from their advertisers. They will send you emails which they get paid per receipt of you reading them or clicking a link. In turn, they give you a cut. Not to ruin your day but it's a rather small cut. The links that end up paying out the most usually have some stipulations attached – such as signing up for a service. This can end up being a lot more hassle than its worth and we recommend you pay VERY close attention to the stipulations.
Each of their surveys you complete will be worth between 100-5,000 points depending on the length and subject. There are a variety of different topics to cover like consumer goods, healthcare and travel, just to name a few. Once you reach 3,000 points you can start redeeming rewards. You have to call and redeem points over the phone, and it typically takes a month for the rewards to reach you.
IOCS is a not-for-profit research organization that conducts studies and experiments on shopping-related behavior – things like how we, as consumers, evaluate products, how we make the buying decisions, etc. Although the focus is mostly on shopping related behavior, some of their experiments and studies include broader areas of marketing, psychology, and economics.