I've been putting a great deal of detail in my coin descriptions, trying to note every defect no matter how tiny. I do this to avoid returns and bad feedback. We accept returns of coins for any reason as long as the flip wasn't opened, and I don't want the buyers to be unpleasantly surprised. This is especially true when I can't get a clear picture of the defect.
Yesterday I started looking at the listings from some coin sellers who have huge feedback numbers, since they're obviously doing something right. Most of them have almost no description at all, just the coin identification and general condition.
What do most of you do? Mention all defects, only the ones that don't show in the pictures, or just ignore them? Do you accept returns? If you do, how often does a coin get returned? Do you get negative feedback along with the return? We've never had a return, but if it only happens once in a while it would be OK.