I wonder if we we might get a bigger response if we list some of the pros and cons. Then, each reader could choose one or two to look into. or For me, I don't know what the pros and cons are. You mentioned that you found various legal and ethical opinions about the use of ghost writers, pen names, and similar issues. Perhaps you could give us a url to some article (or two or three depending on length). Then we could read those articles and discuss them. I am worried that if we make it seem like homework, we'll get a very small response.