Clearly, the only answer is the first one. New punctuation guidelines would also dictate that a comma should follow the word "staff". Since this is a poll the correct response should be given so that responders would learn something. A favor if a reply iregarding my comments is requested.
The first is misleading; the comma would suggest that the negative flowed on and you need a break here to move to the positive. The comma before 'or' is optional. You also might want to put a comma in your comment after "Since this is a poll".
What does 'A favor if a reply iregarding my comments is requested.' mean? It makes no sense to me.
It has to be the Semi-Colon, althought short, "Don't Touch" can still count as a sentence, and the comma is in the correct place throughout.
it could be the one with the period at the beginning otthe one with the semi-colon
I prefer the semi-colon, but I think official posters would use the full stop, because it's punchier.
The most technically correct is probably the one with the semicolon. However, the punchier fullstop version would probably be used for signage, ad campaigns etc.
The firs choice implies "You", therefore it is the proper sentence structure using commas in a list.
TRWTF "How would punctuate" Who, Jesus?
Thanks for spotting that- I have added a subject.