When it comes to dieting, your computer can be your best weapon in the war against weight. There's plenty of research backing up online weight loss services. A study conducted by Brown University showed that dieters who received weekly counseling from a therapist via the world wide web lost three times as much weight in six months as those individuals who only had access to diet and fitness info on the internet. An additional study conducted by the same researchers compared weight loss between a basic online weight loss program and one that offered counseling via email. The group that received counseling and feedback on their performance lost more weight than the individuals participating in a weight loss program with no feedback. A later study published in Obesity Research studied three test groups -- dieters who had face-to-face support, dieters who had minimum face-to-face support and dieters who solely relied on internet support.