"When angry count four; when very angry, swear." ~ Mark Twain
First question: How do you feel about profanity in writing? In the novel I'm working on now, the hero swears every now and again - mostly to show that he's sort of a slacker, a little insensitive, not a great guy at the start...but that's why his change is dramatic later in the novel. One of my readers was offended by the language (specifically, the word "Christ" used twice on the first page, and the f'-word later in the first chapter). She thought it was likely people would put the book down upon reading the first few pages, and I'd be alienating an entire group of people who might otherwise enjoy the story.
Now, the villainous character in One Night in Memphis swears quite a lot, especially as the novel goes on and the danger/conflict heighten. He, of course, isn't a likable guy, and so maybe those language choices are slightly more appropriate or acceptable.
What do you think? Does profanity in dialogue bother you? Does the genre/character/plotline matter at all? Do you have a certain tolerance for it, or none at all?