Another quarterly earnings season kicks into high gear this week with reports from eBay (NASDAQ:EBAY) Google (NASDAQ:GOOG) and Microsoft (NASDAQ:MSFT).  Next week things really pick up for media and communications investors when we hear from Yahoo (NASDAQ:YHOO) AT&T (NYSE:T) Apple (NASDAQ:AAPL) and Comcast (NASDAQ:CMCSA). The market enters this earnings season just a couple of percent off recently attained multi-year highs.  Despite the steady rise in the market since early June there is a lot of worry and concern heading into this earnings season.  In fact current estimates for the S&P 500 (INDEXSP:.INX) call for the first quarter of negative ...