Why do I keep seeing "Removed by Fluther moderators" as a reply to my questions?

Have I missed some rule outlines somewhere? I personally have not had my comments removed, but frequently this message occurs in replacement of other fluther member’s responses to my questions. I am wondering what type of responses are being removed by the fluther moderators. I am also wondering if any of you think it may be more interesting to leave these comments rather then have the moderators erase them so I never know what certain members are saying? I really wish i had the chance to read what the moderators are covering up. What if instead of being left in the dark, the moderators in erasing a response to the questioner, send the erased response to the person asking the question even though they are going to erase it?