I don't know for sure if it is just a fluke, or I really am on to something with this theory:
http://boards.cannabis.com/advanced-...female-id.html

In the last 5 years using this method I have not been wrong one time.....all preflower/show identification. Unfortunately, I am getting so good at making them go female, I rarely see a male. I just follow the other suggestions for female trait growth like high N and whatnot.

People post pictures and if they are not extremely well detailed it is not possible to identify for sure.