After 12 years together, eBay and PayPal will go their separate ways next year. Ever since eBay acquired PayPal for $1.3 billion in 2002, the two companies have been deeply intertwined, serving as the twin pillars of the eBay tech behemoth. The highly lucrative PayPal, which after the split will be a publicly traded company, will now have to make its way alone. Why did eBay and PayPal split? Is it a good idea? And what does the decision mean for you?