Would you ever tell your adopted child the truth? When and how would you do it?

I would if I had an adopted child and as early as possible. Even if the child is too young to understand the meaning of "being adopted", I would introduce the concept so that he/she will take it as a matter of fact. I would think that it will help set the stage for answering future questions such as "where do I come from?". By being opened about the topic will also help encourage him/her to ask any questions or feedback to his/her parents if he/she is being teased in school. And very importantly, it makes it easier to assure him/her that he/she is being loved by the parents. Just my two cents worth of thoughts.