Being too open?

When you are on the computer, using social utilities like Facebook, Myspace, or whatever, do you ever realize how open you might be about private issues? For instance, lets say you express feelings through status updates. Now it might be a personal thought, and it only takes a second to update your status. But then again, do you realize that all your friends on the social network actually see them? Now it's become a trend to just post your thoughts, feelings, etc, but whatever happened to the privacy of it? When people used to write down their feelings, what they were thinking or whatever else in journals, they replaced them with blogs. Blogs are able to be viewed by anyone. They say we are in the communication age, and it's true. Any privacy that was once shared in letters, conversations, or whatever else seems to have changed. Now when you really look at it, are you too open?