Before bidding on an item , take the time to review ALL of the feed back. Look at the number of items that the seller has moved, and the feedback percentage. If the seller has moved twenty items and had negative feedback on eight items, neutral on five, and positive on seven, chances are you might be best served looking elsewhere for the item.
If the seller has moved three hundred items, and has recieved negative feedback on ten items, neutral on eleven items, and positive on the rest, I would then focus on the type of negative feedback, and determine if the negative feedback is from the same buyer, and what attempts were made to resolve the issue. Common sense should factor in at this point.
By using the feedback format, and some simple logic, I believe that your E-BAY experience will be a satisfactory one. All of mine have been