You know by eating more you increase your metabolism... though you can still gain weight. For example for my diet on loosing weight I eat 6 to 7 small meals a day, my metabolism increases and the amount I eat is small and equals the amount of 3 semi large meals a day.
I learned the slim fast thing as well, I was having a drink with each meal and wondered why I gained 5 lbs in a week... but I felt great btw
Now I try slim fast for a day, meals for a day, and trade off, just a test I am doing to see what happens, but I just started it so I have no results yet... I might go slim fast all the way, and mix in creatine as well for my work outs.
But damn my piss stinks now, like nasty cappicino's.
BTW I am doing myown little variant of the BODY for LIFE program... I eat only what is healthy, but I tend to eat too much of it still. Better than chips and cookies for snacks though, I eat chicken and fruits