Just a quick note. I've had a Fitbit for three years as of today, and so far, I've logged 14.4 million steps. My mean over 1,097 days is 13,170 steps per day, though my median is 12,616, reflecting the fact that I have a number of very-high-step days against almost none when I failed to hit 5,000. I've hit 10,000 on 949 days, 87% of the time.
And now I'm going to ratchet up another 4,000 on my way home.