I like to read more than 140 characters and prefer longer format online sources.
My facebook usage is once every couple of weeks, mostly to check that friends are alive and doing ok. Have about five or six tweeters I follow. Rarely ever post on either of them as I have little to broadcast to people. I often cringe when I see mind numbing, self promoting updates from people who need these media to convince everyone how glamorous and hot their lives are.
If most people who're not doing the media thing take a few seconds to read what they're posting and consider if their posts really matter to humanity, I'm sure we'd see far fewer and far more meaningful updates.
Things I cannot do without - an hour or two of mindless TV every day. Mostly Jon Stewart and a couple of other shows I follow.