Good points, but I disagree with this one. If the plan they are using is not working for them, perhaps they should consider another. I was starving, irritable and stalled for months on an 1100 calorie SBD diet & exercising 10 hrs/wk. Now I am a successful 2000 cals/day Fatkins follower who exercises only 3-5 hrs/wk. Of course one should be considerate of the person's current choice of diet, but I see nothing wrong with describing a change that worked.