Right, but the main issue here is not related to his stocks, it is related to the fact that he writes manuals for products he reviews. I don't entirely understand why this is such a big issue - it is normal, for example, for someone who has written a biography of say Sibelius, to be asked to review Sibelius recordings or perhaps somebody else's review of Scandinavian composers. I'm not sure why technology should be different. Yes there is a potential conflict of interest, but normal disclosure rules seem to cover them.