Amazon had a solid fourth quarter, unsurprising for a retailer, even an online one. But its growth was beyond the usual holiday season uplift in sales, revenue was up 42 percent from last year, from $6.70 billion in 2008 to $9.2 billion in 2009. This comes after similar great results in Q3. Income was also on the rise in Q4 and full-year… (read more)