I wrote a "guide book" several years ago, to help potential buyers of a certain type of expensive handbag weed out the fakes and recognize the signs of authentic ones. I sell this book on eBay as an electronic information product, and have many, many grateful customers who write me with thanks for saving them money and frustration, etc. So this morning I see that two guides were sold overnight. One was to a lovely woman, who wrote me shortly after receiving it and thanked me for saving her $$$$$ on an auction she was just about to bid on. The other one was to an eBay user in China. I went to check out that person's feedback and listings, as I always do, and lo and behold, they sell a bunch of "Marni" and other designer KNOCKOFF crap!! Nowhere in their listings does it say that these items are NOT actually made by the designer, or "designer inspired" and in fact a lot of them use the designer's name in the title. Well needless to say I do not condone this. I refunded that person's PayPal payment, with a note that said something like "I am sorry but it appears that you sell knockoffs on eBay and I am not going to provide you with information on how to make knockoff ****** designer bags. Thanks." I also blocked that user ID from bidding on my auctions. Did I do the right thing?? Is this going to come back and bite me, either by that person reporting me to eBay (though I don't believe I did anything wrong--it's MY item, I can choose who to sell it to, right?), or by that person maliciously bidding on my items with a different ID?