One of the most interesting things about the article however was this:
The lady in the Sony CS center replied him “Your (fake) memory stick is genuine, maybe you need to switch to another card reader.” after he asked about his (fake) card not recognized by his computer. So, can we assume that even Sony cannot tell if the memory stick is real or fake?
While the article itself is in another language, PSP Updates has a translated summary and screenshots. Good read for anyone who buys Memory sticks off of places like Ebay.