I see that Robin has a poem on TDE which suggests that there is a difference between male and female writing.
Do you believe there is a difference?
I found this site:
http://bookblog.net/gender/genie.php
"Inspired by an article and a test in The New York Times Magazine, the Gender Genie uses a simplified version of an algorithm developed by Moshe Koppel, Bar-Ilan University in Israel, and Shlomo Argamon, Illinois Institute of Technology, to predict the gender of an author."
You just paste in a sample of text (about 500 words is required), and it tells you if the writer is male or female.
I tried four or five prose pieces of mine, and they all come back as "Male".
I tried a letter from Emily D. = "Female"
Another letter from Virginia W. = "Female"
Give it a try with your own samples, or just explain your opinion on the matter.