Investopedia has a great article on Amazon and its ability to build and sustain a successful business. I think there analysis is quite good. I continue to think that the company is worth buying and holding even though the current technicals indicate waiting for a bit of a rebound.

Online retailer Amazon (NASDAQ:AMZN) continues to pour it on. This online juggernaut, which now sells just about everything under the sun, reported results that continue to defy expectations. In the 2009 fourth quarter, net sales shot up by 37% on an apples-to-apples comparison. The bottom line benefited even more – up 71% in the quarter, representing 85 cents per share. For the full year, sales were up nearly 30% to $24.5 billion and net income reached $900 million, up 40%. Even more impressive is the effect on cash: free cash flow for 2009 was nearly $3 billion, more than twice the cash generated in 2008.

There is more good information in the original article so click through to read the rest.

Company name NRG Energy, Inc.
Stock ticker NRG
Live stock price [stckqut]NRG[/stckqut]
P/E compared to competitors Good
MANAGEMENT EXECUTION
Employee productivity Good
Sales growth Good
EPS growth Good
P/E growth Good
EBIT growth Good
ANALYSIS
Confident Investor Rating Good
Target stock price (TWCA growth scenario) $54.87
Target stock price (averages with growth) $225.27
Target stock price (averages with no growth) $31.58
Target stock price (manual assumptions) $24

Confident Investor comments: At this price and at this time, I think that a Confident Investor can confidently invest in this stock.