I agree with how grammatically incorrect people over the internet can be, but I sometimes don't feel the need to sound smart and use words I barely understand, so that I can please people.  If I can say a simple sentence, why would I need to put more depth into it when the point is clearly stated.  
This however, can only go so far, and when I see people over the internet using horrible grammar, I usually correct them.  Once it becomes obvious they're not joking around, then I tell them to go back to school and look at a dictionary, or they can practice the phrase "would you like fries with that?"  
I've seen how stupid kids can be.  I AM one, and when somebody I know can't spell "golf course" when they've been playing golf for 2 years, I just have to step in.  
I could dive deeper into how flawed our education system is, but I dont wanna be a troll.  
<S> Oogly