Whereas AT&T's move to tiered smartphone data pricing signaled "the end of unlimited" to some, Sprint subsidiary Virgin Mobile USA has just defied that notion with an all-you-can-eat broadband buffet priced at $40 per month. First reported by IntoMobile and confirmed today on the carrier's Facebook page, the plan will replace existing $20, $40 and $60 monthly offerings that topped out at just 5GB, so only those accustomed to paying $20 a month (for 300MB) aren't getting a totally sweet deal. A
