In what may be the ultimate expression of conspicuous consumption, Starbucks says you can now pay for the company&amp;#8217;s products with selected handheld devices. That&amp;#8217;s right. Your overpriced cell phone, connected to the Internet thanks to an overpriced data plan, will be able to reimburse Starbucks for its overpriced coffee. A trifecta! Starbucks has been [...]