How do you as an author keep track (or don't you) of the individual mannerisms and speech patterns of your characters?
If one character always mispronounces a certain word, do you use phonetic spellings every time the character uses it, or only the first time?
Do you show phonetic spellings when characters from some region use their regional preferences? (I see a lot of authors emphasizing Southernisms). If so, do you NOT use phonetics for characters from other regions (such as your own, which, by definition, must be correct)? And, if you use regionalisms from regions other than your own - how do you know what they are?