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.
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.
Wow, This is the first article I’ve ever read that 1. didn’t offer up filling out surveys as a serious way to earn extra cash, and 2. said everything I’ve ever thought about surveys as a side hustle. I don’t know why people keep suggesting this, when as you point out, there are much better side hustles to score serious cash more efficiently. WELL DONE! ;)

InboxDollars. New users get a $5 bonus after confirming their email address with InboxDollars. But that didn’t make up for how little we earned per hour while taking surveys — 41 cents, the lowest rate among the 12 sites we tested. On occasion, instead of sending us surveys, the site directed us to promotions that required our address, phone number and birthdate. Read our InboxDollars review.
*Member must "Activate" the Bonus in the Swag Ups section of your account. Bonus value is earned in the form of points, called SB. Get a 1000 SB bonus, which is equivalent to $10 in value, when you spend at least $25 at a store featured in Swagbucks.com/Shop. You must receive a minimum of 25 SB for this purchase, which you must complete within 30 days of registration. MyGiftCardsPlus.com and travel purchases do not qualify.

If you can't find any information on other sites or forums, there are some things about the website you can check for yourself. The first thing we recommend is to look for a privacy policy. Having one on the site that is easily accessible to users is a clear sign of credibility. It shows that the company is at least making some promises as to how your information will be used. Lacking a privacy policy is a clear red flag and often signifies a scam.
Survey sites advertise that you can earn $5-$35 per survey (although a Student Loan Hero reporter found an average more in the range of $1-2 per hour). Paid online surveys are utterly ubiquitous—there are hundreds of sites that feature paid surveys. These surveys are typically run by marketing or research firms looking for consumer perspectives, and you could be asked questions covering just about everything under the sun.
Referral program: Referral programs are a common aspect of thousands of websites as they are a great way to get new registered members. As you may already know, some of the biggest e-commerce giants as well as other companies offer rewards and bonuses to users for referring their website to their friends and family. All you have to do is subscribe to their referral program and share a link to your friends.
Survey Junkie makes it quick and easy to jump into the survey game. According to their websites, they say they are the most popular spot online to earn cash and rewards for sharing your thoughts, while that might not be technically true, they are one of the largest survey sites out there. They were launched all the way back in 2005 (which is pretty old for a survey site) and they have over 4,000,000 members. 
Just like the other survey sites, every time you complete one of the surveys, you’ll receive anywhere from 35-250 points, which equals about $1.50 to $1.75 per a survey. Once you rack up enough cash to payout (which you’ll have to accumulate at least $50), you’ll have several different options to receive your money. You can get your money through a check, through your PayPal account, or redeem it for gift cards.
Velasquez says our information could be used for questionable studies or sold to health insurers, for example. Or it could be stolen, which is a risk with any website that stores personal data. Most of the information we gave away seemed harmless — our shopping habits and travel plans, for example. But information like your birthdate could be used with other stolen data to take your identity. So keep that in mind as you’re answering questions.
Illegitimate companies and scammers have a simple objective. They're after your information in order to get your money. It's much more common for internet scammers to target hundreds of people for small sums rather than a single person for thousands. This is because demanding large sums for a product that is somewhat unclear is an obvious red flag to most.
Referral program: Referral programs are a common aspect of thousands of websites as they are a great way to get new registered members. As you may already know, some of the biggest e-commerce giants as well as other companies offer rewards and bonuses to users for referring their website to their friends and family. All you have to do is subscribe to their referral program and share a link to your friends.

By only sending you questionnaires you are already qualified for, Pinecone wastes far less of your time than many sites which require you to fill our qualifying questions before starting each survey. However some users have said they don’t receive very many surveys, which could be a consequence of their careful filtering. Equally the site retains the right to remove you from their panel if you no longer fit their desired demographic, so make the most of your membership while you have it!

“I participated in an in-home product trial study. A coffee machine company sent me one of the coffee makers along with about 200 coffee pods. I received $7 for completing 3 short surveys. Plus, after the study, the company said I could keep the coffee maker. So, I got like 4 mos of coffee for everyone in my household, a free coffee maker and $7!” - David W.
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