In the States and Canada, "you" may come out as "yeh"- yeh don't say. A changed ye? "Yuh" don't say is also heard. At "yiz" we roll our eyes because the speaker is trying to emphasize his Irishness. "Youse" used to be considered a part of the Brooklyn accent, but no more.

"Not" can be tricky. An example from Prentice-Hall Handbook for Writers:
FAULTY - Ellen not only has been outstanding in her studies but also in athletics.
PARALLEL - Ellen has been outstanding not only in her studies but also in athletics.

When we(one) speak(s), we(one) often forget(s) just how a sentence was initiated and (we-one) stumble(s) toward(s) the end. Luckily, people mostly understand our intent. Mudcat postings are more akin to speech; minor errors should be forgiven.

Now many people say impact instead of either affect or effect. Impact has lost its emphasis as a result. This is one that I don't forgive.