Facebook? What's that? (Opened an account but haven't logged in that much)
I only check Facebook to see how fat my school friends have become (a couple of minutes per week)
I check it every couple of days to see how many friends I have gained or lost (every couple of days)
I only use it for business (every day)
It's my home page (every day... and lunchtime... and evening)
I have Mark Zuckerberg footie pajamas on right now (Every day for at least 5 minutes)