I’ve had Toluna about a month and a half - overwhelming amount of notification emails explaining high -point surveys availabile. After 10 to 15 minutes of qualification questions- which pertain to the particular survey- I’ve qualified for 2. But Apparently the pre-screen questions are tracked and shared amongst marketing departments because as No points are awarded for the qualification questions and/or time involved, your emails and text zzz messages begin to mysteriously fill up with ads and solicitations. The overall evaluation promises that, at the very least, you will provide-(for free)- your demographic consumer information while being a huge waste of time.
It seems like an obvious fix would be to have each persons main stats I.e. age, gender, location, etc. attached to their profile to be pre-screened and properly matched before sending an email.
To sum it up: Surveys, in general are a bad idea. Unless you can get compensation before you answer the first question, it’s not going to ever be worth it.