Light conversion

As well as silly comments about my light box at work, several people have approached me to confirm that it is indeed a light box. Some of them, or someone they know, suffer from mild SAD too, and want to know whether it helps, and how it works, so they can look into it.
I doubt I will start a light box trend at work (I don't want to be trendy), but I like that people are willing to accept it, and do something about it!