Quad-Core Mobile Chips Wasted On Mobiles?

An anonymous reader writes "Dual-core smartphones have only just hit the market, but mobile chipmakers Nvidia and Qualcomm are already turning their attention to quad-core chips. While it looks certain that tablets will be the first quad-core mobile devices in the market, chipmakers reckon they'll land in smartphones too. But do smartphones need quad-core chips? There's surely only so much multitasking a smartphone user can do. I'm interested to hear what smartphone apps/features/functions — if any — Slashdot readers reckon quad-core chips would enable"