NEVER. Ok, I did a couple of weeks ago when I was near a scale and just had to peek. The number was good (18lbs in about 6 weeks) I don't like scales. If I feel good about myself and know I have been good and the scales say I haven't lost any then it upsets me. I don't want to do anything that may make me turn to food for "comfort" (ie,Well, I didn't lose anything, so I'll just eat some cake instead of "depriving myself!

)
I go by how my clothes fit and how I look in the mirror. Those 2 criteria never let me down. My clothes are getting baggier and baggier and my face is looking more like my "old" face every day.It surprises me every time I look in the mirror in the morning. A number is just number and I don't want a stupid number to make me feel like I'm not accomplishing anything. That's just me.
I may weigh myself in a few months when pants fall down to my knees and I know I'm closer to the 50 I want to lose.