I always get a darker reading at night. Many mornings I don't get any at all, but will be well into ketosis (according to the sticks) at night. I think its tough to get a good idea of what's going on by the sticks, but an indication that anything is going on is very good for me. I find it much easier to stick to the diet with some sort of reading.

The weight hasn't exactly been melting off, but its working.