These numbers were using the fit bit and I compared it to my pedometer on my phone which I carried all day. The number were very close to the same. Today I kept having people stop by so was not as active and the numbers are close to the same again.
Definitely worth monitoring.
I ordered a fitbit for my wife as a means to monitor her activity and try to increase it a little each day. She is not on Actifit... But I am hoping it will motivate her to increase.