Locked ads are usually when their item is overpriced or they are embarrassed about their item and don't want to hear the truth. They would rather hide behind the lock. I place everyone that locks their ads on my Ignore list. If they do not want to discuss their item then I do not want to see their ad. I am NOT missing any good deals by doing this. The posters that place ads that are truly good deals will welcome comments and leave their ad unlocked.