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.
To save time and money, many companies are turning to online market research. Surveys, in particular, can easily be conducted online or over e-mail. The cost of a 200-person, e-mail survey is $2,500 to $5,000. To get the same number of responses from a snail mail survey would cost between $5,000 and $7,000, and phone surveys can run as high as $15,000 [source; Yahoo! Small Business].
They are new to me. I did a search and wasn’t able to turn up much online, other than this – https://forum.surveypolice.com/index.php?/topic/4110-saw-an-advertisement-for-iglobalsurveys/. Someone thinks they are more of a “survey router,” not the same as answering Q’s directly for a survey panel. So I think I personally wouldn’t sign up, but as always I recommend that you do you your own research in addition to the research I’ve done.
With over 20 million active members, Swagbucks is the premier destination for paid survey takers looking to earn money for giving their opinion online. Swagbucks provides access to tens of thousands of paid survey-taking opportunities every day. With every online survey, you are affecting key decisions from major companies and organizations. More survey opportunities means more chances to make your opinion count - and more earning potential for you! Unlike most other online survey sites, Swagbucks will even give you a bonus when you don’t qualify for a survey, meaning you never miss out on getting paid.