This user does not put two spaces after a full stop.
A, B, and A and B
This user prefers to use the serial commaonly when its omission can be confusing.
’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. Internal punctuation leads to factual errors. It's not a style issue!
?met?
This user prefers metric units and cannot figure out why Americans and Brits have such a hard time with them.