Tried to give you a thumbs-up Whippet, but you'd already been thumbed down. Can't think why, you make some excellent points.
I don't blame teachers for the evolution of language; in fact, they probably have very little to do with it. Most kids would fight NOT to sound like their teachers. The majority of slang these days is probably internet and SMS based. B4 that it wz prob frm the TV/back of the bike shed.
