I am politically incorrect. Hence, I will use common sense and speak plainly rather than trip all over myself trying to be inoffensive.
to too two
This user thinks that too many people have no idea how to use words that they should have learned in grade two.
A, B, and A and B
This user prefers to use the serial commaonly when its omission can be confusing.
they he or she
This user considers the singular they to be substandard English usage.
In writing, although it would be nice to have a gender-neutral 3s pronoun. Prescriptivism is sometimes fun, even though it really isn't something linguistics does.
To use 'they' to stay gender-neutral in writing is...less than appealing, and using "he or she" multiple times consecutively looks clumsy. And "aren't I" instead of "ain't I?" to avoid all use (even etymologically correct use) of "ain't" is something with which I ain't putting up. :)
Generally no infinitives split with a negative, unless there is a specific reason against keeping the infinitive together. When there is a significant difference between 'not to believe' and 'to not believe', then I let it pass.
This user believes it is every citizen's duty to assess every candidate and, if none is fit to be voted into office, abstain from voting (unless he or she wants to vote anyway).