Smart investing in penny stocks has more to do with results and DD usually is a good prognosticator of expected results. So far My DD has been spot on in forecasting VLDI failure after failure. When one believes the smoke and mirrors, the Ganthet Sham, and Bruce's spin stories of OEM mobile operators rolling out the product globally, that is not DD it is wishful thinking or rather drinking the Kool Aid! The question never answered is why after all that tested the product either walked away or if they signed a license agreement never put the product into commercial use. That says it all as far as results not much need for further DD in my book.
"Sarcasm is the last refuge of the weak mind". (Dostoyevsky) and "The important thing is not to stop questioning. Question everything" (Albert Einstein)