Dumb Question - Has anyone ever done this?

Hi All,
Heard some folks at work who were looking for some extra cash on the side talking about maybe looking into doing one of those things that "claims" you can make money by filling out surveys & product feedback forms from home "in your free time." They asked my opinion, and I told them that I would be pretty skeptical. I was wondering if anyone on here has tried that, and whether they are legit or scams. I have my opinion, but just curious.
Heard some folks at work who were looking for some extra cash on the side talking about maybe looking into doing one of those things that "claims" you can make money by filling out surveys & product feedback forms from home "in your free time." They asked my opinion, and I told them that I would be pretty skeptical. I was wondering if anyone on here has tried that, and whether they are legit or scams. I have my opinion, but just curious.