Looking back on this year's most anticipated tech products, disappointment is a common theme. Android tablets were sales duds. HP, the world's biggest PC maker, temporarily had the bad idea to stop making PCs. The Nintendo 3DS was such a failure at launch that Nintendo had to slash prices. And for months, we've heard talk of a bubble in Silicon Valley, fueled by well-funded failures such as Color. But among the flops, some companies managed to find success this year.