Since this thread was supposedly about the ad and not the napster service itself, here's my say:
If Napster has a 2/10ths-decent marketing firm, then the point of this advertisement is not to get customers to "do the math" -- no advertising campaign is.
Advertisements are only rarely geared at people who know about the product, sit down, and analyze the options. Those are not people who would be convinced by any advertisement.
If this ad can get the people who don't think about it to get into the mindset that "Napster is cheap, iTunes is expensive", then the campaign will have been successful.
If Napster has a 2/10ths-decent marketing firm, then the point of this advertisement is not to get customers to "do the math" -- no advertising campaign is.
Advertisements are only rarely geared at people who know about the product, sit down, and analyze the options. Those are not people who would be convinced by any advertisement.
If this ad can get the people who don't think about it to get into the mindset that "Napster is cheap, iTunes is expensive", then the campaign will have been successful.