Dozer561 wrote: »

Pretty sure in the FAQ it says to log all food and all non walk/run/jog workouts time/duration etc in MFP only. And other times just let fitbit do its thing while your going about your day or walking etc. Inputting "when" you workout should override the steps counted during that time. or just don't wear it when working out and logging workouts like that.

Do I log all my exercise in MFP per instructions MFP gave?
Don't need to at all. That is merely so you use MFP more, and more usage is more ad dollars.

Fact is for the non-HR devices any step based exercise (walking, running, gym classes, ect) will have a pretty good estimate for calorie burn from Fitbit (if stride length is correct), unless the walking/running is at good incline for good amount of time, because it assumes flat. You would need to log non-step based workouts though (swimming, rowing, biking, elliptical, stair climber, resistance training with weights or machines), because the steps seen are not related to the calorie burn at all.

For the HR devices any cardio is going to be decent enough estimate. Though here again, lifting should be manually logged as it's not aerobic steady-state, and calorie burn will be inflated using HRM formula. Manually logged in database as - Weights on Fitbit, Strength Training on MFP.

So for what should be manually logged, it can be logged in MFP or Fitbit. Fitbit's database uses a better method of calculating calorie burn, and for some non-step based exercises has more intensity options, more about that below. It also prevents the need for an extra sync from MFP to Fitbit, before updated daily burn is synced back to MFP.
If you want friends to see your workout, just make a wall post about it, with more details than you'd normally get. The Fitbit Activity diary has better view and options anyway compared to MFP.