I hear a lot of people talking about how they hate exclamation points, and can you guess their typical gender ??

I know most writing style guides will look down on them, but I'm sorry, they work great for expression! I kind of get annoyed by that opinion and I think people that hate exclamation points should rethink!! ! !!!!!!!! !! !
But I agree there is more to the differences between male an female writing than that, Alexander, but it's hard for me to figure out them out too. I can always tell the sex of writers though. I am always impressed when a man can write a woman so she sounds like a woman, it really is that rare!
If I were to try to boil the differences down I would say that women typically think about people where guys typically think about things, and that shapes how they use language. I think you will see a lot of personal pronouns with women (I, you, she,) where with men you will see lots of words that describe
things (the, that, it.) I think this just scratches the surface, but that is a place to start? Obviously I'm generalizing and talking about how people write and think ON AVERAGE, I don't mean everybody fits a mold.