"Smarter"? No. "Fun and light-hearted"?, Yes (if the curse is not mean-spirited). At the same time, we're not dropping "F-bombs" in Toys 'R Us. My motto... Through human to human interaction, if someone is offended by a mild swear word, it's a good judge to me that I probably won't click with this person. Mostly because I'll probably offend them some other way in the future when I "slip up" as we humans usually do.
As far as the forums go, I agree that we should "filter" ourselves, as this is a family site. But you'll soon find that coming off as a hard"bottom" is more offensive to this community than a stray curse word.
My two cents.