Here is a survey of responses to the cover, which addresses whether viewers "got it" (that it was supposed to satirize a smear campaign, or if their response was that it illustrated the the real Obamas).

Mediamatters.org posted the graph of survey responses from readers of World Net Daily.
(689) 60% responded
The image isn't too far from the dangerous truth about the Obama family.
(128) 11%
Funny, because there is some truth in it.

There are 11 other types of responses, dwindling down in numbers to the last one, 0% (2) It is obvious the New Yorker wants McCain to win.

See the article and survey by clicking here.