As a non-native English speaker, I prefer “log in” to “sign in” as “sign in” is very similar to “sign up” which some sites use instead of “register”. The differ

As a non-native English speaker, I prefer “log in” to “sign in” as “sign in” is very similar to “sign up” which some sites use instead of “register”. The difference between “sign in” and “sign up” is subtle and requires me to consciously think. Use "log in" and "register". Don't make me think.