The concept of data mining and profiting off that data mining isn't anything new. And while some companies engage in some rather disreputable practices to do this, Global Test Market seems to be doing just fine with the whole “consent to disclose” thing. More importantly, in some cases this may help you as some companies will offer to do more specialized product testing once they've identified you as their target demographic.
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.
A well known survey panel, Valued Opinions is owned by leading market research company ResearchNow and is open to people in more than 20 countries around the world, including the USA, UK and Australia. The site uses a range of different languages and has around three million members busily filling in surveys and questionnaires. Most surveys taken will reward you between $1 and $5 and take up to around 20 minutes to complete, asking you about marketing, brands and products and even news events. There is a steady rate of invites to surveys, but you won’t always be qualified for them, which can become tiresome.