wow people have finally figured out it's retarded and completely against self interest to loan your coins out to people who want to dump down the price ? hot damn !
If you are confident that bitcoin has positive demand pressure in the long term, it is absolutely not against your interest to loan them the coins to push you higher when they close. Unfortunately you have to park them with someone else, which could very easily negate the interest income. We have too few shorts right now, not too many.