A shell-shocked economy, spiraling debt at financial institutions, or just plain bad management -- on any given day, investors can name a number of reasons to sell a stock. Yet, while panic never helps investors, it's still a good idea to play devil's advocate with investments.

In Motley Fool CAPS, more than 135,000 members have weighed in on nearly 5,300 stocks, sharing bullish and bearish opinions alike.

Consider solar module maker Evergreen Solar (NASDAQ:ESLR). The solar sector is showing some signs of life again, but in Motley Fool CAPS, a significant number of the 2,078 members weighing in on the company still offer reasons to be bearish. I've already plucked out some of the common bullish rationale backing Evergreen Solar today, so here are three counterpoints, courtesy of CAPS.

1. Idle inventory: Like many other solar companies, Evergreen has been hurt by weak demand and a glut of supply in the market. It's affected pricing for companies like Evergreen and First Solar (NASDAQ:FSLR) and caused many companies like Energy Conversion Devices (NASDAQ:ENER) to significantly cut production to bleed off excess inventory.

2. Widening losses: While SunPower (NASDAQ:SPWRA) posted positive second-quarter earnings and MEMC Electronic Materials (NYSE:WFR) topped estimates, Evergreen posted a wider-than-expected loss in the second quarter as it experienced lower selling prices and was dragged down by its Sovello joint venture.

3. Cash burner: Evergreen hasn't posted a quarterly profit since 2007 and has been burning through cash, which obviously can't be sustained forever without additional capital or debt offerings. While China has announced its long-awaited solar subsidy for large solar power projects, potentially benefiting Chinese companies like ReneSola (NYSE:SOL) and Suntech Power (NYSE:STP), renewable energy companies in the U.S. have been waiting for beneficial policies like investment tax credit grants and loan guarantees to flow here at home.

Of course, Evergreen Solar has survived amid the current turmoil. But the question about whether the company will ultimately be a winner is why CAPS is such a great resource to augment your own analysis.

To see what the very best CAPS members are saying now about Evergreen Solar, just click on over to Motley Fool CAPS and have a look -- it's all free, and even open to your opinion. And be sure to check out the counterargument to this article with three reasons to buy Evergreen Solar.

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Fool contributor Dave Mock has never entered a toilet-tossing competition but would be proud to represent his country if called. He owns no shares of companies mentioned here. First Solar and Suntech Power Holdings are Rule Breakers recommendations. The Fool's disclosure policy keeps Dave honest with his stock trades and disclosure, and it even has a provision to keep him from having dessert unless he eats all of his vegetables.