IIN to always be able to tell if someone online is male or female?

Well... it's hard to list everything, since a lot of it is subconscious thought, but... I can give it a shot. Please don't be upset if any of this sounds sexist or like profiling (because it is! why *wouldn't* it sound like stereotypes?). I know not every one is going to be true, but that's why it's a multiple flag system.

Guys tend to:
-Care more about their spelling / punctuation in the beginning, but become more slack with it later on.
-Are more prone to describing emotions briefly
-More often type "lol" than "haha, that's funny!" (and other similar things)
-Tend to be more pushy (This is a HUGE giveaway. Girls are rarely pushy)
-feel awkward when 'girly things' are blatantly mentioned (periods, birth control, discharge, etc)
-are more straightforward with what they desire
-are less straightforward about how they feel
-usually have a 'breaking point' when it comes to inane gossip (sooner than women)
-generally don't use proper punctuation, capitalization, and grammar (and when they do, there tends to be more of a sense of "superiority" than personal integrity)
-don't shy away as much when asked sexual questions
-often preemptively ask sexual questions
-usually aren't typing as many words as women (I look through text logs sometimes and notice I say tons of shit, and they just drop 1-2 sentences between my paragraphs xD)
-are more inclined to "prompt" conversation, than to desire responding at length
-ask more questions, and freely offer less information / thoughts / etc.
-don't know how to answer questions about things girls usually keep to themselves or share with other girls
-are more visual regarding sexual things (send pics! or: look at my pics!)
-are less visual regarding concepts and theories
-boldly state opinions
-are less apologetic
-value logic more highly, and emotion less so
-talk about sex more frequently

Again, I'm SORRY!!! if you or anyone who reads this is offended! It's not meant to be a clear, "this happens 100% of the time!" list. They are generalizations, and some probably seem unfair.(They are, but that's how it works) I take each person individually :) And I don't begrudge female impersonators. Hope that helps!