Is swearing (or cussing, or whatever you want to call it) sinful?
Ephesians 4:29 - "Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to hear."
I hear self-proclaimed Christians swearing a lot, on this board and IRL. Are they sinning? What speech is okay and what isn't?