You take a scale. You give it Wi-Fi. And then you let it log in to your Twitter account to tell the world how much you weigh each morning. That's what this is: the Wi-Fi Body Scale.
At first it sounds silly, but the more I think about it the more I like the idea. If I'm trying to lose weight, this is a good way to force me to watch what I eat lest I embarrass myself in front of my Twitter followers. If it shows me blowing up like a whale instead of dropping pounds then I don't just know I'm doing something wrong, my peers do, too. Shame can be a powerful tool.
The $159 scale already records the user's body weight, lean and fat mass, and calculated body mass index (BMI) to a secure Web site accessible by the user. The Twitter integration, though, is a new feature. The Twitter feature is being called "peer motivation" by Withings, the scale's maker, and they're right. I'd call it "weight loss by fear as motivation," but I'm just some blogger.