Been calorie counting for the past couple of weeks. I set a goal of keeping my total daily consumed calories under 1600 and I'm about to pass 7 consecutive days of hitting that goal.
Down about 7.8lbs so far as well...which is a little under my weekly goal of 2lbs. Pretty happy with that, actually. That's 7.8lbs across 4-ish weeks, which is right on the money as far as good healthy progress goes.
I picked 1600 calories as the goal because of the inaccuracies innate in measuring the portions of what I'm eating....that and I'm sure MyFitnessPal doesn't have perfect data for each of the things I'm logging as well. Any fewer calories and I'd be starving myself. Any more and I'd not really be losing weight.