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The fitness-tracking app launched a "Healthy" button and bookmarklet on Monday that makes it feel more like a social network.
Users can now add content to their RunKeeper newsfeeds directly from sites that install the Healthy button. So far those sites include news sites such as Spry Living and Greatist as well as brands such as PowerBar. They can also add content to their feeds from sites that haven't installed the button through a bookmarklet.
Although RunKeeper started out -- as its name suggests -- simply tracking runs, its ambition is to map health data the same way that Facebook maps social data. For this reason, it has opened its API and integrated with heart rate monitors, wi-fi scales, blood pressure monitors and fitness watches.