The letter U, even though it sounds like the word "you", is never an acceptable substitution for the actual word. The same goes for the letter R. It is not the same as the word "are".
If you are going to spend the time to create some form of literary graffiti and place it in the face of the unsuspecting masses, then try not to blatantly point out the failings of the U.S. educational system.
If you really feel, deep in your shallow heart, that anyone really cares what was on your mind today at 10:05am, when anyone with an actual purpose in life, was earning some form of wage, while you were contemplating the secrets of the universe from your place in the Starbucks line... Then at least spend the extra three seconds to make sure that "normal" people can read your mindless dribble.
If you cannot afford the minimal effort that requires, at least be considerate enough to limit the publication of your memoirs to the bathroom stall at that old truck-stop out on the interstate... or the Internet equivalent of that stall... Twitter.
