just starting to get my groove on with this site, Prolific Academy. it is UK based and pays in pounds so it can be a bit confounding initially. it is essentially academic researchers offerings paid research studies. the studies are interesting and more about human nature and decision making which are a welcome break front usual technology and shopping habits surveys i take all day long!
i usually wait for an email invite and i have discovered they do close rather quickly so don't wait hours to open up the study invite. so far i have only taken about 10 studies but they all have been approved and my score is 100/100. i really am not sure how points are deducted and what effect that has on the studies you receive. they do pay in paypal although they do charge a small service fee if you reside outside the UK.
you can also visit the site directly to view any open studies. i do appreciate that they list the avg. rate per hour, avg. completion time and slots available for every study.
and it is GLOBAL so anyone can register!
prolific academy registration