ParkerVision, Inc. (PRKR)

An almost worthless stock and one of the most fascinating scams in stock market history. Management has artfully managed to sell "the sizzle" by promising that it discovered a major breakthrough more than a decade ago yet it has never produced a meal: no revenues, no earnings and its price/sales ratio is astronomical.

But don't be too sure that you can bring your red thumb to the bank any time soon. A review of the scorecard for this stock over the past few years reveals an erratic price history in which some red thumbs -- and some green thumbs'' have done well while others have done poorly.

Of course, in the long run the market will expose this sham. But a cynic might also remind us that, in the long run, we'll all be dead.

Thus it is with my eyes wide open that I can't resist shorting this stock anyway.