[William Tell]

I want the USA back said: "I give the authors a 100."

I was going to deduct points for using "extravert" instead of "extrovert", not realizing that it is an alternate spelling.

I do deduct a point for using both "mix up" and "mix-up".

[Arthur McGowan]

Sometimes “mix-up” is correct, and sometimes “mix up” is correct.

Where you see “login,” 99.99% of the time, it should be “Log in.” Same with “signup.”