did you know General Mills has their own survey panel? it is open to US residents ages 18 or over.
it is a panel you won't hear much from but it is always a nice surprise when you do. lots of potential for online focus groups and webcam discussions that pay $75 on average. rewards are paid in amazon codes.
honestly i only hear from them about 4x a year and do not qualify for most of the nice paying projects.
maybe you will have better luck than me!