reply to JackBauer
Re: who cares? probably more likely to push a deal to many 'urban dwellers' (NYC) where they wouldn't want to pay the extra $20-$30/month for limited data over cellular.
Maybe their long term is to partner with a cellular provider (aren't they hitching up with VZW?). It'd give AT&T a run for their money, and reduce the cost of overages, and give them some clickstream cash.