Often. And it's a very bad habit. I've been trying to curb my usage of them online as much as possible, because it's led to several incidents that I do regret. Worst part is that I've been desensitized as to how bad some words are, considering how nonchalantly they're used around me, and that sort of makes me ignorant to how bad it looks objectively. Ad the fact that I use them as platonic rhetoric (does that even make sense) and yea. =/ In real life, I've been trying to curb it, too, but it's really hard when you're surrounded by potty mouths.