The last time Nielson Home Scan opened up for volunteers they required that you have a landline phone, but they just opened for everybody!
I have never been able to get in this program (I have tried a few times). They will ask for your zip code to see if you are eligible. Many of my readers love it and a few decided it was not for them. It is worth a shot.
If you have a landline phone then sign up here.
If you do not have a landline then sign up here.