A Look Back at Tech Highlights of 2010

-The long-dormant tablet product category was elevated to superstar status thanks to Apple's aapl introduction of the iPad.

-Facebook was embroiled in more controversy over privacy, now that hardly prevented every person you ever knew from joining the world's leading social network - adding to an online population that's but north of half a billion. Some Facebook friends even let you know their whereabouts in real time by checking in via a new Places feature.