I've thought about this subject many times after reading other's posts. Made me wonder if the usage & application of the rules of grammar had stopped being taught in American schools. The almost constant confusing of to & too, your & you're, advise & advice, their & they're, (and a hundred others that don't come to mind @ the moment) has always drawn my attention. But then, I also find proofreading mistakes in virtually every book I read (and I read quite a bit). Maybe I've become more obsessive & anal as I've gotten older but my personal opinion of the quality of education in this country is that it has declined dramatically over the past 40 or so years & does not bode well for us as a nation. There is a direct correlation between level of intelligence, empathy, spirituality & morality. Glad I won't be around for another 40 years to see where this is headed. I don't like what I see.