Just out of interest since my 'hermies' are no longer an issue since all of them are now uprooted. I found an answer by Ed Rosenthal where he says that if there is just one branch that is male or hermaphrodite, you can cut it off and the rest of the predominantly female plant will stay female. Also, if a plant is very near the end of its budding cycle and it pops out a few male flowers in the buds you are safe to leave them. Pity I didn't find all of this out before I pulled 4 of my plants though, I could have had a couple of ounces from each one within a few weeks...
Oh well, that guy who was angry with me cause he broke his $3.59 light globe following my post on how to wire your cfls without a socket can have a smug feeling of satisfaction now, I guess!