This user uses the serial commaunless its inclusion is confusing.
its it's
It's really not that hard to use each word in its proper manner.
’s
Thi's user know's that not every word that end's with s need's an apostrophe and will remove misused apostrophe's from Wikipedia with extreme prejudice.
"…"! US vs. UK
This user uses "logical quotation marks". Forcing internal punctuation leads to factual errors. It's not a nationalistic style issue!