Paul, your explanation comes quite close. There are instances where I will inform a seller of an error. Usually it is a seller I know, and who knows me. I also have sellers and prospective buyers contact me via e-mail. I don't mind helping them when I can, but I'll not get caught up in a tussle between buyer and seller. Unlike Mr. Levine and others, my help does not require a fee, or even usually an offer to buy, so it is not really a matter of professionalism for me, but rather a sense of propiety. Would you interfere and hex a deal in a car dealership if you heard a salesman misrepresent a new car? Would you stand up in church and argue with a preacher over his sermon? I don't know how to explain it any better except to say to use caution and good judgement if you choose to interfere in an eBay auction in any way.
Codger
PS - Any buyer or seller who wants the best information available on Schrade, Schrade Walden, Imperial, or Ulster knives only has to come here and ask. As far as eBay goes, ancient maps often marked it's location "Here Be Dragons".