I saw a big box retailer on my route and snapped it up before realizing it was with GFK.
32 pages of instructions.
They wanted to know about 5 different appliances and the top three recommendations for each appliance type.
They had at least 90 narratives no matter how you answered.
All this and you got rewarded with $15.
I did two of their fun and easy cellphone shops. The report took me a minimum of three frustrating hours each. They give you a detailed description of how to rate the service. Then they ask you in five successive narratives why you rated the way you did.
It is like trying to write a report for someone with both OCD and Alzheimer's. (No disrespect intended, just can't think of a better way to express the level of frustration I felt while writing those reports.)
Needless to say, I emailed the scheduler and gave them a frank and honest opinion of what was required for the appliance shop. I cancelled it 10 minutes after I got it.
After getting spammed with 30 to 40 emails a day for their horrible cellphone shops, I changed my profile to never get emails from them.
Fool me once, shame on GFK. Fool me twice and your emails stay in my spam folder.
In their favor, they paid super fast and rated my reports 10 each!