fitbit?

I recently received a fit bit as a birthday gift.  I feel like it is showing many more steps that I actually take.  Then again, perhaps I was more active than I thought?

Anyways, just curious if anybody else who has it feels the same way.  Also, do you use all the features it offers?  I still have not but want to try to although have several questions about some.

 I just found that if you wear your fitbit on yur bra... it will record MANY steps when you are driving. If you wear it on the bracelet when you drive it doesnt. That may accound for the extra steps. Or perhaps you just do walk more than you think. Other than the driving thing I have found it to be quite accurate.