I believe it would be a benefit to the community and your own interest in diverting sales from this seller if you'd explain what your negative experience(s) is/was.
Providing an accurate view of the facts permits the reader to evaluate the situation and determine if they want to do business with the person or not. Suggesting only that people stay away without citing a reason (detailed or otherwise) is effectively a waste of your own effort because nobody knows why they should stay away (and as a result won't feel particularly inclined to stay away).
Providing an accurate view of the facts permits the reader to evaluate the situation and determine if they want to do business with the person or not. Suggesting only that people stay away without citing a reason (detailed or otherwise) is effectively a waste of your own effort because nobody knows why they should stay away (and as a result won't feel particularly inclined to stay away).