A.B.
About ten years ago, I signed up with several survey companies to bring in extra cash. I did get paid for all of the surveys, but I don't think I would attempt it today.
First of all, the data mining possibilities/liabilities just aren't worth it. I didn't know what a risk it was a decade ago; I'm totally paranoid now.
Second, they don't pay well. I know they advertise that you can get paid big bucks for doing surveys, but the fact is, most of the surveys for money only pay a couple of dollars each. A couple of times, I got to do $5 surveys, and that was a big deal. It didn't happen often. All surveys totaled, I probably only made around $30 during a year of taking surveys regularly.
Third, most survey companies are only looking for a very particular demographic. At the time I was doing them, I was regularly disqualified on the grounds of not fitting a particular demographic. Incidentally, most of those were income related.
Fourth, they are extremely time consuming. Most of the surveys took a minimum of 25 minutes to complete. It can really eat up your time. My husband really put into perspective one day when, after waiting for me to finish an almost hour long survey, he pointed out that I was getting paid less than half of what I'd make if I just had an actual part time job.
It wasn't long after that that I quit doing them. It's just not worth the time and effort (or the potential risk).