BigJonsson
Member
Afaik they're open to register for, and you supply information about yourself, and then they select panels from the people who've registered selecting for demographics matching the target of the poll (province, country, city, etc). They are not technically random samples the way phone wardialling is assumed to be (but possibly isn't either anymore) so they can't have a real MoE attached to them.
Hmmm, I'd put more faith in IVR and voice polls then