I believe grammar is somewhat being overrated by some folks. I think some of the grammar movement people are being awfully close to pedantry at times. What some people label bad grammar is another person's idiomatic language. It can say a lot about where people are from, their social position etc etc.
I think it is wonderful whenever people dare write like they speak. Me,on the other hand, I'm slowly evolving into a more boring and correct way of expressing myself.