Big things are expected from Amazon ( AMZN) when the online retail giant reports its second-quarter results after the market closes Thursday as investors eye healthy numbers. With the tech sector finally showing signs of stability, Wall Street is expecting Amazon to show decent growth. Analysts surveyed by Thomson Financial expect Amazon to post revenue of $4.69 billion, a 16% hike on the same period last year, reflecting growing confidence in online spending. Like many parts of the economy, online retail has felt the effectsof the economic slowdown, although there have been indications that this may be improving. Amazon rival eBay ( EBAY), for example, beat analysts' estimates in its second-quarter results Wednesday, and other Internet stocks have also done well. Yahoo! ( YHOO) posted solid second-quarter numbers Tuesday and outlined its plans to challengeGoogle ( GOOG). Seattle, Wash.-based Amazon, which recently opened an online outdoor recreation store and a Web site offering cell phones and service plans, has kept busy during the downturn. "Amazon has been adding product sub-categories at a steady clip and recent traffic data to the site points to continued strength in visitation, both of which bode well for revenue growth," wrote Youssef Squali, an analyst at Jefferies & Company, in a recent note. Earlier this week Amazon also announced plans to buy online shoe retailer Zappos for about $807 million in stock, paying an additional $40 million in cash and stock to Zappos employees. A rumor has also been circulating recently that Amazon may buy Netflix ( NFLX), which would significantly expand the firm's online empire.