Could any of the sellers here clarify the auction question process for me? Are all questions asked of the seller public or are they posted at the discretion of the seller? I wonder because I wanted standard USPS instead of Global and asked the seller with some criticism of Global and it never showed in the "questions" area of the auction.

I've given up trying to change a seller but have decided to leave feedback that says:
"Thank you for not using Global Shipping, I save and you get a higher price."
Better than the usual A+ etc. type thing and it gets the message out.