Hello Future Employer,
Great idea. Right now, [login to view URL] is the 28th largest site here in the U.S, with over 39 million visitors a month.
And it owes it's success almost exclusively to those surveys.
I don't have a lot of reviews on this site, as this is my first time here in years, but what I do have is years of experience working with social API's ( Twitter, Instagram, Facebook), and developing social platforms.
I would be very interested in building something like this for you, and seeing it used by potentially thousands or even millions of people.
Message me and we'll get this project off the ground very quickly.
cheers,
p.s : Are you sure you want to use PHP for this?