Sarcasm gets me nowhere

Posting on Facebook brings out my most sarcastic side. It's a tad distressing because I really don't want to hurt anyone's feelings, but no doubt it's going to happen. My theory is that it's too much inter-generational exposure for me. If I could bring myself to delete the account, that would be a step in the right direction. Maybe tomorrow. Why do the blogs I read seem so much more honest? Is it because I don't know the bloggers personally?