Zogby does two types of polls, one traditional phone polling and one by polling people who sign up to be polled by email -- the interactive poll. The phone polling is generally OK while the interactive polling is generally shit because it violates the basic precepts of polling by using a self-selected sample.
This is quite obviously an interactive poll because it talks about "responses," which is a reference to people responding to the email solicitation. And the sheer number of respondents for a fucking Newsmax poll on a such a stupid fucking question simply could not have been done be telephone. Additionally, if you actually performed this poll by telephone I'm sure as shit that you'd get quite a few "who the fuck is Scott Brown" responses.
Lastly, the mere fact that Zogby doesn't have shit on its website about this poll and Newsmax hasn't released the details either has my bullshit meter pegged at 11.